| 关于复阻尼理论的几点注记 |
| |
| 引用本文： | 何钟怡,廖振鹏,王小华. 关于复阻尼理论的几点注记[J]. 地震工程与工程振动, 2002, 22(1): 1-6 |
| |
| 作者姓名： | 何钟怡 廖振鹏 王小华 |
| |
| 作者单位： | 1. 哈尔滨工业大学,哈尔滨,150090
2. 中国地震局工程力学研究所,哈尔滨,150080 |
| |
| 基金项目： | 国家自然科学基金资助项目（59878015） |
| |
| 摘 要： | 给出了复阻尼本构方程在全频域的表达式，完成了向时域表达式的转换。中指出，基于Fourier频域的本构不能用于求解由初值确定的自由振动，只有延拓至复频域，才具备概括自由振动与强迫振动两种工况的能力。为了满足热力学定律的约束，对复频域本构必须附加限制条件。离散计算时，由于未实施这一限制条件，一定会导致失稳。中对解决失稳问题提出了若干建议。
|
| 关 键 词： | 复阻尼 本构方程 频域 时域 热力学约束 自由振动 强迫振动 |
| 文章编号： | 1000-1301(2002)01-0001-06 |
| 修稿时间： | 2001-08-10 |
Some notes on theory of complex damping |
| |
| HE Zhong-yi. LIAO Zhen-peng WANG Xiao-hua. Some notes on theory of complex damping[J]. Earthquake Engineering and Engineering Vibration, 2002, 22(1): 1-6 |
| |
| Authors: | HE Zhong-yi. LIAO Zhen-peng WANG Xiao-hua |
| |
| Abstract: | The constitutive equation with complex damping in full frequency domain is given and the equation in time domain is derived. It is indicated that the constitutive equation based on Fourier frequency domain can not be used in situations of free vibrations. It is necessary to extend to complex frequency domain for being applicable to both free and forced vibrations. However, an additional inequality constraint must be included in the constitutive equation for following the laws of thermodynamics. In the case of discrete calculation the instable phenomenon should emerged. because the inequality constraint is not implemented. Some suggestions are presented to solve the problem of instability in the paper. |
| |
| Keywords: | complex damping constitutive equation frequency and time domain: constraint of thermodynamics: frequency domain extension instability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
