Page 68 - 《爆炸与冲击》2025年第6期

第 45 卷 第 6 期 爆 炸 与 冲 击 Vol. 45, No. 6
2025 年 6 月 EXPLOSION AND SHOCK WAVES Jun., 2025

DOI：10.11883/bzycj-2024-0405

高温大理岩的动态能量耗散机理及破坏特征 *

张 旭 ，刘晓辉 ，刘楚佳 ，罗 盈 1,2
1,2
1,2
1,2
（1. 西华大学能源与动力工程学院，四川 成都 610039；
2. 西华大学流体及动力机械教育部重点实验室，四川 成都 610039）

摘要： 为探究高温对大理岩能量特性的影响，利用 ANSYS/LS-DYNA 对大理岩开展了 6 级温度梯度、 5 种冲击速
度的动态压缩试验，分析了高温动载作用下大理岩力学特性、能量演化的温度效应，最终从能量耗散角度探讨高温大
理岩强度失效的能量判据。研究结果表明：(1) HJC 本构模型能够合理有效模拟不同温度下大理岩动态变化破坏过程；
(2) 随着温度的增加，大理岩动态峰值强度和动弹性模量与温度呈二次函数负相关，动态峰值应变与温度呈二次函数
正相关，破坏形态由“X 型”共轭剪切破坏向粉碎性破坏转变，破碎细粒尺寸减小；(3) 当温度到达 600 ℃ 时，峰值强
度大幅降低，大理岩延性增加，呈现粉碎性破坏，耗散应变能达到最大值，600 ℃ 可作为大理岩脆延转化的阈值温度；
(4) 依据能量演化过程特征，将耗散应变能陡增点视为大理岩整体失稳破坏前兆信息点，根据应力-弹性能耗比-应变关
系曲线界定弹性能耗比增长速率首次出现的拐点作为大理岩的强度失效能量判据。
关键词： 高温大理岩；SHPB；能量耗散；失效判据
中图分类号： O345 国标学科代码： 13015 文献标志码： A

Study on dynamic energy dissipation mechanism and damage characteristics
of high-temperature marble

1,2
1,2
1,2
ZHANG Xu , LIU Xiaohui , LIU Chujia , LUO Ying 1,2
（1. School of Energy and Power Engineering, Xihua University, Chengdu 610039, Sichuan, China;
2. Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, Sichuan, China）

Abstract: To investigate the effect of high temperature on the energy characteristics of marble, ANSYS/LS-DYNA was used
to carry out dynamic compression simulation tests on marble with six temperature gradients at five impact velocities to analyze
the mechanical properties of marble under high-temperature dynamic loading and the temperature effect on energy evolution,
and to explore the energy criterion for strength failure of high-temperature marble from the perspective of energy dissipation.
The results show that the Holmquist-Johnson-Cook (HJC) constitutive model can reasonably and effectively simulate the
dynamic damage process of marble under different temperatures. With the increase in temperature, the dynamic peak strength
and dynamic elastic modulus of marble exhibit a quadratic negative correlation with temperature, the dynamic peak strain
exhibits a quadratic positive correlation with temperature, and the damage morphology is changed from X-type to conjugate
shear damage. The increase in temperature reduces the energy storage capacity of the marble specimen to a certain extent,
while the effect of high temperature on the energy dissipation capacity of marble is transformed from a facilitating effect to an
inhibiting effect with 600 ℃ as the cut-off point. When the temperature reaches 600 ℃, the peak strength is significantly
reduced, the ductility of the marble increases, crushing damage is presented, and the dissipated strain energy reaches the
maximum value. 600 ℃ can be used as the threshold temperature for the brittle-delayed transformation of the marble. Based on

* 收稿日期： 2024-10-24；修回日期： 2024-12-02
基金项目： 四川省自然科学基金 (2022NSFSC0279)
第一作者： 张 旭（1999－ ），女，硕士，15690861127@163.com
通信作者： 刘晓辉（1977－ ），女，博士，教授，liuxh@mail.xhu.edu.cn

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