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Issue:
Strain Analysis of Nonlocal Viscoelastic Kelvin Bar in Tension
Author(s):
ZHAO Xue-chuan
,
LEI Yong-jun
,
ZHOU Jian-ping
Pages:
62
-
68
Year:
2008
Issue:
1
Journal:
APPLIED MATHEMATICS AND MECHANICS
Keyword:
非局部理论
;
Kelvin粘弹性体
;
Neumann级数
;
杆
;
应变分析
;
Abstract:
在Kelvin粘弹性体模型中引入非局晨应力应变关系,得到了粘弹性体的非局部本构方程,研究了符合该种本构关系的直杆受到轴向拉力作用的应变响应问题.首先通过变换将应变响应的求解问题转化为Volterra积分方程形式,然后采用对称的指数型核函数,利用Neumann级数展开求解了Volterra积分方程,得到了直杆的应变场.数值算例的计算结果显示了直杆受轴向拉力作用后的蠕变过程,当时间趋近无穷大时,计算结果则退化为非局部弹性计算结果.
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