GENERALIZED VARIATIONAL PRINCIPLES FOR VISCOELASTIC THIN AND THICK PLATES WITH DAMAGE

• 来源期刊: 固体力学学报(英文版)
• 学科: 工学
• 关键词: 刚心 刀口 一价 切口
• 年，卷（期）: 2004,（1）
• 页码范围: 65-73
• 页数: 9页
• 分类号: TG115
• 语种: 中文

摘要

From the constitutive model with generalized force fields for a viscoelastic body with damage, the differential equations of motion for thin and thick plates with damage are derived under arbitrary boundary conditions. The convolution-type functionals for the bending of viscoelastic thin and thick plates with damage are presented, and the corresponding generalized variational principles are given. From these generalized principles, all the basic equations of the displacement and damage variables and initial and boundary conditions can be deduced. As an example, we compare the difference between the dynamical properties of plates with and without damage and consider the effect of damage on the dynamical properties of plates.