An improved damage constitutive model for pre-heated rocks under uniaxial compression considering the initial compaction effect and residual strength

本构方程 材料科学 威布尔分布 残余应力 硬化(计算) 非线性系统 残余物 压实 结构工程 固体力学 弹性模量 压力(语言学) 岩土工程 机械 复合材料 地质学 有限元法 数学 工程类 算法 哲学 物理 统计 量子力学 语言学 图层(电子)
作者
Xunjian Hu,Dongdong Ma,Ni Xie,Qizhi Zhu,Haibo Hu,Xiaonan Gong
出处
期刊:International Journal of Damage Mechanics [SAGE Publishing]
被引量:1
标识
DOI:10.1177/10567895241275380
摘要

Enhancing our understanding of the damage evolution in pre-heated rock is essential for safer design practices. Accordingly, a mechanical damage variable that accurately depicts the initial damage recovery process was proposed. Subsequently, a damage constitutive model is developed based on the generalized equivalent strain principle, enabling the identification of the initial nonlinear characteristics exhibited in the stress-strain curve. By integrating the above constitutive model with a statistical damage model that considers the residual strength based on the Weibull distribution, a comprehensive piecewise damage constitutive model specifically designed for pre-heated rocks was derived. The model consists of eight parameters, which can be directly determined through experimental results or readily obtained by fitting of the stress-strain data. A comparison of experimental data from multiple pre-heated rock types subjected to uniaxial compression is performed to validate the proposed model, revealing a strong agreement between the theoretical and experimental results. The comparison results demonstrate that the proposed model effectively captures the nonlinearity of the stress-strain curve throughout various stages, including the initial compaction, linear elastic, and strain-hardening stages before reaching the peak stress, as well as the subsequent strain-softening and residual stages. Furthermore, the proposed damage constitutive model elucidates the influence of temperature on crucial factors such as the elastic modulus, peak stress, residual strength, and stress-strain curve of pre-heated rocks, thereby enhancing its applicability in the design of deep underground rock projects.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Estrella发布了新的文献求助10
刚刚
冰红茶发布了新的文献求助10
1秒前
爆米花应助学习采纳,获得10
1秒前
丰富广缘发布了新的文献求助10
2秒前
Akim应助彩色的访文采纳,获得50
2秒前
光亮的立果完成签到,获得积分10
2秒前
leiyunfeng完成签到,获得积分10
3秒前
3秒前
3秒前
4秒前
4秒前
小HO完成签到,获得积分10
4秒前
科研通AI5应助羊冰安采纳,获得10
4秒前
CNY完成签到 ,获得积分10
4秒前
zxn完成签到,获得积分10
5秒前
慕青应助红尘采纳,获得10
6秒前
wgm完成签到,获得积分10
6秒前
7秒前
香蕉觅云应助舒适的书雪采纳,获得10
7秒前
兔兔跑路完成签到,获得积分10
7秒前
nn发布了新的文献求助10
8秒前
8秒前
8秒前
Wei发布了新的文献求助10
10秒前
孝艺发布了新的文献求助10
10秒前
连虎刚应助张朝程采纳,获得10
10秒前
乔治完成签到,获得积分10
10秒前
炙热晓露完成签到,获得积分10
11秒前
WANG发布了新的文献求助10
12秒前
刘攀旺完成签到,获得积分10
12秒前
松鼠完成签到 ,获得积分10
12秒前
朴实小夏完成签到,获得积分10
12秒前
12秒前
小二郎应助paradeYH采纳,获得10
13秒前
Brian发布了新的文献求助80
13秒前
霸气的瑛发布了新的文献求助10
13秒前
13秒前
jianhan发布了新的文献求助10
14秒前
Gzdaigzn完成签到,获得积分10
14秒前
nn完成签到,获得积分10
14秒前
高分求助中
Encyclopedia of Mathematical Physics 2nd edition 888
Technologies supporting mass customization of apparel: A pilot project 600
材料概论 周达飞 ppt 500
Nonrandom distribution of the endogenous retroviral regulatory elements HERV-K LTR on human chromosome 22 500
Hydropower Nation: Dams, Energy, and Political Changes in Twentieth-Century China 500
Introduction to Strong Mixing Conditions Volumes 1-3 500
Optical and electric properties of monocrystalline synthetic diamond irradiated by neutrons 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3805997
求助须知:如何正确求助?哪些是违规求助? 3350835
关于积分的说明 10351617
捐赠科研通 3066714
什么是DOI,文献DOI怎么找? 1684126
邀请新用户注册赠送积分活动 809309
科研通“疑难数据库(出版商)”最低求助积分说明 765432