主要研究成果
在材料响应和破坏、爆炸与冲击动力学高置信度数值模拟软件研制等方面取得系列创新成果。在《PRL》、《JMPS》、《IJP》等国内外学术期刊上发表论文50余篇。中国力学学会计算力学专业委员会非连续性有限元专业组成员，中国数学会计算数学专业委员会会员，四川省力学学会第九届理事会理事、第十届理事会常务理事，南方计算力学专业委员会委员。获得中物院自然科学类科技创新奖二等奖1项、军队科技进步三等奖1项，获授权发明专利5项、软件著作权3项，入选中物院第七批“双百人才工程”。
近期发表论文如下：
[1]J.S. Bai， X.Wang， X.Y. Pei，Y.Wang，Y.Y. Yu，Q. Shen，G.Q. Luo，C.D. Dai. An Improved Impactor Design for Eliminating Spallation in High-Impedance Flyers During Hypervelocity Launch, Experimental Mechanics (2016) 56:1661–1664.
[2]Yao, Song-Lin，Pei, Xiao-Yang，Yu, Ji-Dong，Bai, Jing-Song，Wu Qiang，A dislocation-based explanation of quasi-elastic release in shock-loaded aluminum，Journal of Applied Physics，2017.01.01，121（3）
[3]F.X. Liu, Z.L. Liu, X.Y. Pei, J.Q. Hu, Z. Zhuang, Modeling high temperature anneal hardening in Au submicron pillar by developing coupled dislocation glide-climb model, International Journal of Plasticity, 99 (2017) 102-119.
[4]Song-Lin Yao, Xiao-Yang Pei*, Ji-Dong Yu*, Qiang Wu, Scale Dependence of thermal hardening of FCC metals under shock loading, Journal of Applied Physics, 128, 215903(2020)
[5]Songlin Yao, Xiaoyang Pei, Zhanli Liu, Jidong Yu*, Yuying Yu, Qiang Wu, Numerical investigation of the temperature dependence of dynamic yield stress of typical BCC metals under shock loading with a dislocation-based constitutive model, Mechanics of Materials, 140, 103211(2020)
[6]Songlin Yao, Jidong Yu, Yinan Cui, Xiaoyang Pei, Yuying Yu, Qiang Wu, Revisiting the power law characteristics of the plastic shock front under shock loading, PHYSICAL REVIEW LETTERS 126, 085503 (2021)
[7]Hao Zhang, Hui Peng, Xiao-yang Pei*, Ping Li, Tie-gang Tang, and Ling-cang Cai. A Phase-field model for spall fracture. Journal of Applied Physics. 129, 125903(2021)
[8]Hao Zhang, Xiao-Yang Pei, Hui Peng, Jian-Ying Wu*. Phase-field modeling of spontaneous shear bands in collapsing thick-walled cylinders. Engineering Fracture Mechanics. 249, 107706(2021)。
[9]Hao Zhang, Hui Peng, Xiaoyang Pei*, Songlin Yao, Hongliang He, and Ping Li. Critical damage degree model of spall fracture in ductile metals, Journal of Applied Physics. 130_125105(2021).
[10]Zhenfei Song, Xiaoyang Pei, Jidong Yu, Jianheng Zhao *, Fuli Tan. Hypervelocity impact tests on a Whipple shield using a flyer plate in the velocity range from 4 km/s to 12 km/s, International Journal of Impact Engineering.156-103899(2021).
[11]Songlin Yao, Xiaoyang Pei, Jidong Yu*, Qiang Wu,Assessment of the time-dependent behavior of dislocation multiplication under shock loading, International Journal of Plasticity. 158,103434, ( 2022).
[12]Zhang, H.; Peng, H.; Pei, X.-Y*., et al., Phase-field modeling of coupled spall and adiabatic shear banding and simulation of complex cracks in ductile metals. Journal of the Mechanics and Physics of Solids, 2023, 172, 105186.
[13]Songlin Yao, Jidong Yu, Xiaoyang Pei, Yinan Cui, Hao Zhang, Hui Peng, Yi Li, Qiang Wu, A coupled phase-field and crystal plasticity model for understanding shock-induced phase transition of iron. International Journal of Plasticity. 2024,173, 103860.
[14]Songlin Yao, Jidong Yu, Xiaoyang Pei, Thermodynamically consistent phase-field model for pressure-induced multiphase phase transformation at high strain rate and its application to bismuth. J. Mater. Res. Technol.,33,7083-7099, 2024.
[15]Xianye Wu, Xiaoyang Pei, Xiang Chen, et al., Formation mechanism of multiple spallation and its penetration induced by shear localization loading. Matter and Radiation at Extremes,10,017802,2025.
[16]Xin Lai, Siyan Ran, Xiaoyang Pei**, Hao Zhang, Fang Wang. The role of crystal orientation in cracking performance of HCP magnesium single crystals. Mechanics of Materials, 201, 105235, 2025
[17]Binhao Su, Tianning Cui, Hui Peng, Xiaoyang Pei, Jianfeng Li, Kai Guo. The Resistance of Sandwich Cylinders With Density-Graded Foam Cores to Internal Blast Loadings. Journal of Applied Mechanics, Vol. 92 / 031007-1,2025
[18]Yuchen Zhang, Weilong Yang, Xin Yang, Jin Wang, Chao Lv, Hao Zhang,Xiaoyang Pei*, and Fang Wang. Dynamic damage response of sing-crystal NiTi alloys induced by shear localization. Acta Mechanica Sinica, Vol. 41, 124177 (2025)
[19]Xiang Chen, Xiaoyang Pei*, Hao Zhang, Xin Yang, Weilong Yang, Shang Gao, Yixuan Peng, Fang Wang. Atomistic insights into void distribution characteristics in a NiTi cylindrical shell exposed to explosion loading. Journal of Materials Research and Technology, 38, 1581–1592, (2025).
[20]Zhenting Yang; Songlin Yao; Hao Zhang; Xiaoyang Pei. Crystal-plasticity–phase-field modeling of strain-rate-induced fracture mode transition in metals. International Journal of Mechanical Sciences. 2026卷：311期：1
[21]Chengbo Wu; Sui Jia; Yiyuan Jiang; Songlin YaoCorresponding Author; Xiaoyang Pei. Phase-field modeling of shock initiation in β-HMX_ From hotspot growth to steady detonation. Matter and Radiation at Extremes. 2026卷：11期：4
[22]Shang Gao; Hao Zhang; Xiaoyang Pei; Qiuyun Yin; Meizhen Xiang; Xin Yang; Yixuan Peng; Fang Wang. Atomistic mechanisms of shock-induced spallation in perfect single-crystal NiTi alloy under various stress states. Matter and Radiation at Extremes. 2026卷：11期：3
