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Published Research PapersFiltered: Year 2025 • Vol. 32 • Issue 7

Showing 14 of 153 peer-reviewed papers with full Graphical Abstracts.

Original ResearchVol. 32, Issue 7 • pp. 722-734DOI: 10.1007/s11771-025-5967-6• Jul 24, 2025

Dynamic mechanical properties and constitutive model of red sandstone under different loading rates and high temperatures

Authors: LI Ye, YANG Sheng-qi, LIU Zi-lu, WANG Chao, LI Zi-li

Dynamic compression experiments were conducted on red sandstone utilizing a split Hopkinson pressure bar (SHPB) to study the loading rate and high temperatures on their mechanically deformed properties and ultimate failure modes, and to analyze the correlation between the strain rate, temperature, peak strength, and ultimate failure modes. The results show that the mass decreases with the increase of treatment temperature, and the pattern of the stress −strain curves is not impacted by the incre

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Dynamic mechanical properties and constitutive model of red sandstone under different loading rates and high temperatures

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Original ResearchVol. 32, Issue 7 • pp. 894-906DOI: 10.1007/s11771-025-5862-1• Jul 22, 2025

Enhanced oxidation mechanism of arsenopyrite in two-stage oxidation process applying bio-oxidation waste solution

Authors: ZHANG Shi-qi, YANG Hong-ying, TONG Lin-lin, CHEN Guo-min, KANG Guo-ai, ZHAO Zhi-xin

Applying bio-oxidation waste solution (BOS) to chemical-biological two-stage oxidation process can significantly improve the bio-oxidation efficiency of arsenopyrite. This study aims to clarify the enhanced oxidation mechanism of arsenopyrite by evaluating the effects of physical and chemical changes of arsenopyrite in BOS chemical oxidation stage on mineral dissolution kinetics, as well as microbial growth activity and community structure composition in bio-oxidation stage. The results showed t

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Enhanced oxidation mechanism of arsenopyrite in two-stage oxidation process applying bio-oxidation waste solution

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Original ResearchVol. 32, Issue 7 • pp. 330-342DOI: 10.1007/s11771-025-6011-6• Jul 21, 2025

Iterative solution and numerical analysis of vehicle-track-bridge nonlinear coupled vibration considering viscoelasticity of rail pads

Authors: CUI Wei-tao, GAO Liang, XIAO Hong, MIAO Shuai-jie, NIU Zhen-yu, XIAO Yi-xiong

To investigate the effect of rail pad viscoelasticity on vehicle-track-bridge coupled vibration, the fractional Voigt and Maxwell model in parallel (FVMP) was used to characterize the viscoelastic properties of the rail pad based on dynamic performance test results. The FVMP model was then incorporated into the vehicle-track-bridge nonlinear coupled model, and its dynamic response was solved using a cross-iteration algorithm with a relaxation factor. Results indicate that the nonlinear coupled m

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Iterative solution and numerical analysis of vehicle-track-bridge nonlinear coupled vibration considering viscoelasticity of rail pads

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Original ResearchVol. 32, Issue 7 • pp. 502-514DOI: 10.1007/s11771-025-5908-4• Jul 19, 2025

Deformation mechanism of a novel pipe-roof composite slab: An experimental and theoretical investigation

Authors: LU Bo, JIA Peng-jiao, ZHAO Wen, NI Peng-peng, BAI Qian, CHENG Cheng

Steel tube slab (STS) structure, a novel pipe-roof structure, of which steel tubes are connected with flange plates, bolts and concrete, is an increasingly popular supporting structure for underground space development. Whilst the load-bearing of pipe-roof structures has been the subject of much research, uncertainties of deformation mechanism and the derivation of reliable calculation methods remain a challenge. For efficient design and wider deployment, this paper presents a bidirectional bend

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Deformation mechanism of a novel pipe-roof composite slab: An experimental and theoretical investigation

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Original ResearchVol. 32, Issue 7 • pp. 738-750DOI: 10.1007/s11771-025-6028-x• Jul 18, 2025

Enhancing resistance of honeycomb sandwich panel under local impact through face sheet-core matching relationship

Authors: LEI Zi-ping, GAO Feng, DI Hao, LIU Jie-fu, WANG Zhong-gang

To enhance the resistance of honeycomb sandwich panel against local impact, this study delved into the matching relationship between face sheets and core. An integrated approach, combining experiment, simulation, and theoretical methods, was used. Local loading experiments were conducted to validate the accuracy of the finite element model. Furthermore, a control equation was formulated to correlate structural parameters with response modes, and a matching coefficient λ (representing the ratio of core thickness to face sheet thickness) was introduced to establish a link between these parameters and impact characteristics. A demand-driven reverse design methodology for structural parameters was developed, with numerical simulations employed to assess its effectiveness. The results indicate that the proposed theory can accurately predict response modes and key indicators. An increase in the λ bolsters the structural indentation resistance while concurrently heightens the likelihood of penetration. Conversely, a decrease in the λ improves the resistance to penetration, albeit potentially leading to significant deformations in the rear face sheet. Numerical simulations demonstrate that the reverse design methodology significantly enhances the structural penetration resistance. Comparative analyses indicate that appropriate matching reduces indentation depth by 27.4% and indentation radius by 41.8% of the proposed structure.

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Enhancing resistance of honeycomb sandwich panel under local impact through face sheet-core matching relationship

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Original ResearchVol. 32, Issue 7 • pp. 110-122DOI: 10.1007/s11771-025-5947-x• Jul 16, 2025

High-temperature stability and mechanical property optimization of laser powder bed fusion 316L steel after controlled annealing

Authors: LI Wen-qi, MENG Li-xin, ZHANG Qian-fen, LU Hui-hu, NIU Xiao-feng, HOU Hua

The research demonstrated that laser powder bed fusion (LPBF) coupled with controlled annealing at 1200 °C, could significantly increase the proportion of coincidence site lattice (CSL) grain boundary, thereby achieving an outstanding synergy of enhanced strength and exceptional ductility. The plastic deformation behavior, strain hardening behavior, and fracture behavior of LPBF 316L steel annealing at 1200 ℃ for 20 h were studied through quasi-in-situ tensile process. It was found that LPBF 316

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High-temperature stability and mechanical property optimization of laser powder bed fusion 316L steel after controlled annealing

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Original ResearchVol. 32, Issue 7 • pp. 518-530DOI: 10.1007/s11771-025-5973-8• Jul 13, 2025

Hydration mechanism and microstructure characteristics of modified magnesium slag alkali-activated coal-fired slag based cementitious materials

Authors: SUN Wei-ji, LIU Lang, ZHAO Yuan-yuan, FANG Zhi-yu, LYU Yong-zhe, XIE Geng, SHAO Cheng-cheng

As the second most important solid waste produced by coal-fired power plants, the improper management of coal-fired slag has the potential to result in environmental pollution. It is therefore imperative that high-value utilization pathways for coal-fired slag should be developed. In this study, modified magnesium slag (MMS), produced by a magnesium smelter, was selected as the alkali activator. The activated silica-aluminum solid wastes, namely coal-fired slag (CFS) and mineral powder (MP), wer

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Hydration mechanism and microstructure characteristics of modified magnesium slag alkali-activated coal-fired slag based cementitious materials

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Original ResearchVol. 32, Issue 7 • pp. 690-702DOI: 10.1007/s11771-024-5720-6• Jul 11, 2025

Hydraulic fracturing-based analytical method for determining seepage characteristics at tunnel-gasketed joints

Authors: GONG Chen-jie, CHENG Ming-jin, FAN Xuan, PENG Yi-cheng, DING Wen-qi

Waterproof performance of gaskets between segments is the focus of shield tunnels. This paper proposed an analytical method for determining seepage characteristics at tunnel-gasketed joints based on the hydraulic fracturing theories. First, the mathematical model was established, and the seepage governing equation and boundary conditions were obtained. Second, three dimensionless parameters were introduced for simplifying the expressions, and the seepage governing equations were normalized. Thir

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$Hydraulic fracturing-based analytical method for determining seepage characteristics at tunnel-gasketed joints$

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Original ResearchVol. 32, Issue 7 • pp. 126-138DOI: 10.1007/s11771-025-6000-9• Jul 10, 2025

Theoretical and experimental study of a compact energy absorption structure

Authors: WANG Yan-jing, SUN Cheng-ming, CHEN Fei-peng, YAO Shu-jian, SUN Hong-ji

The advancement of rail transportation necessitates energy absorption structures that not only ensure safety but also optimize space utilization, a critical yet often overlooked aspect in existing designs. This study presents a compact energy absorption structure (CE) that integrates the advantages of cutting rings and thin-walled tube modules, offering a solution with the high space utilization and the superior crashworthiness. Through theoretical modeling and experimental validation using a dr

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Theoretical and experimental study of a compact energy absorption structure

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Original ResearchVol. 32, Issue 7 • pp. 298-310DOI: 10.1007/s11771-025-5889-3• Jul 8, 2025

Femtosecond laser modulated into Bessel beam by spatial light modulator for Fresnel zone plate processing

Authors: DUAN Lian, ZHOU Fang, KONG De-jian, ZHANG Fan, SUN Xiao-yan, DUAN Ji-an

Femtosecond laser processing is an important machining method for micro-optical components such as Fresnel zone plate (FZP). However, the low processing efficiency of the femtosecond laser restricts its application. Here, a femtosecond laser Bessel beam is proposed to process micro-FZP, which is modulated from a Gaussian beam to a Bessel annular beam. The processing time for FZP with an outer diameter of 60 μm is reduced from 30 min to 1.5 min on an important semiconductor material gallium arsen

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Femtosecond laser modulated into Bessel beam by spatial light modulator for Fresnel zone plate processing

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Original ResearchVol. 32, Issue 7 • pp. 534-546DOI: 10.1007/s11771-025-6013-4• Jul 7, 2025

Deformation warning and microseismicity assessment of collapse in fault development area of Yebatan Hydropower Station

Authors: Pei Shu-feng, Zhao Jin-shuai, Chen Bing-rui, Li Shao-jun, Jiang Quan, Xu Ding-ping, Wang Ze-nian

The collapse of rock masses in fault-developed zones poses significant safety challenges during the excavation of high-stress underground caverns. This study investigates the spatiotemporal evolution of the collapse mechanisms of the cavern in the Yebatan Hydropower Station through using microseismic (MS) monitoring and displacement measurements. We developed a multi-parameter deformation early warning model that integrates three critical indicators: deformation rate, rate increment, and tangential angle of the deformation time curve. The results of the early warning model show a significant and abrupt increase in the deformation of the rock mass during the collapse process. The safety and stability of the local cavern in the face of excavation-induced disturbances are meticulously assessed utilizing MS data. Spatiotemporal analysis of the MS monitoring indicates a high frequency of MS events during the blasting phase, with a notable clustering of these events in the vicinity of the fault. These research results provide a valuable reference for risk warnings and stability assessments in the fault development zones of analogous caverns.

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Deformation warning and microseismicity assessment of collapse in fault development area of Yebatan Hydropower Station

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Original ResearchVol. 32, Issue 7 • pp. 706-718DOI: 10.1007/s11771-025-5935-1• Jul 5, 2025

Optimization of mesh characteristics of gear pair considering influence of assembly errors

Authors: ZHAO Xiao-jian, MA Hui, MA Ze-yu, LIU Jia-qi, CAO Peng, WU Yu-ping, DING Xiang-fu, ZHAO Tian-yu

Gear assembly errors can lead to the increase of vibration and noise of the system, which affect the stability of system. The influence can be compensated by tooth modification. Firstly, an improved three-dimensional loaded tooth contact analysis (3D-LTCA) method which can consider tooth modification and coupling assembly errors is proposed, and mesh stiffness calculated by proposed method is verified by MASTA software. Secondly, based on neural network, the surrogate model (SM) that maps the re

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Optimization of mesh characteristics of gear pair considering influence of assembly errors

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Original ResearchVol. 32, Issue 7 • pp. 142-154DOI: 10.1007/s11771-025-6041-0• Jul 4, 2025

Influence of pre-compression and pre-aging on precipitation behavior in casting Mg-9.8Sn-3.0Zn alloy

Authors: LIU Yun, LIU Chao-qiang, NI Song, SONG Min

The effects of pre-compression and pre-aging on the age-hardening response and microstructure of Mg-9.8Sn-3.0Zn (wt.%) alloy have been investigated via hardness test and advanced electron microscopy. The alloy subjected to both pre-compression and pre-aging exhibits the most refined and densest distribution of precipitates upon aging at 200 ℃, leading to the superior age-hardening performance observed in the alloy. Comparatively, the alloy that underwent only pre-aging displayed a greater number density of precipitates than its counterpart that was neither pre-compressed nor pre-aged when both were aged to their peak conditions at 200 ℃, indicating an enhanced age-hardening response in the pre-aged alloy. The precipitates in these three peak-aged alloys consist of Mg2Sn and MgZn2 phases. The reason why the pre-aged alloy has a higher number density of precipitates than the directly aged alloy is that MgZn2 phase formed during pre-aging can serve as heterogeneous nucleation site for the formation of Mg2Sn. The reason why the pre-compression and pre-aged alloy has the highest number density of precipitates is that Mg3Sn and MgZn2 phases formed during pre-aging, alongside lattice defects introduced during pre-compression, collectively act as effective heterogeneous nucleation sites for the formation of Mg2Sn during the subsequent aging at 200 ℃.

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Influence of pre-compression and pre-aging on precipitation behavior in casting Mg-9.8Sn-3.0Zn alloy

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Original ResearchVol. 32, Issue 7 • pp. 314-326DOI: 10.1007/s11771-025-5962-y• Jul 2, 2025

Bearing characteristics of anchor box beam support system in deep thick roof coal roadway and its application

Authors: WANG Qi, WANG Ming-zi, JIANG Bei, XU Chuan-jie

Considering the characteristics of deep thick top coal roadway, in which the high ground stress, coal seam with low strength, and a large range of surrounding rock fragmentation, the pressure relief anchor box beam support system with high strength is developed. The high-strength bearing characteristics and coupling yielding support mechanism of this support system are studied by the mechanical tests of composite members and the combined support system. The test results show that under the coupl

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Bearing characteristics of anchor box beam support system in deep thick roof coal roadway and its application

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