| 卢炎麟,张淑佳.轴对称热冲击SIF过渡过程分析的热权函数法[J].计算力学学报,2001,18(1):118~123 |
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| 轴对称热冲击SIF过渡过程分析的热权函数法 |
| Thermal weight function method for calculating transient SIFs in axisymmetric thermal shock problems |
| 修订日期：1999-02-01 |
| DOI：10.7511/jslx20011023 |
| 中文关键词: 热权函数 热权函数法 应力强度因子 热冲击 轴对称 |
| 英文关键词:thermal weight function,thermal weight function method,stress intensity factor,thermal shock,axisymmetric problem |
| 基金项目:国家自然科学基金! (597750 31)，浙江省自然科学基金! (5950 80 )，浙江工业大学科学研究中心资助!(199910 ) |
| 卢炎麟 张淑佳 |
| [1]浙江工业大学机电工程学院，浙江杭州310014 [2]浙江工业大学机电工程学院，浙江杭州31001 |
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| 中文摘要: |
| 热权函数法利用温度与热权函数的乘积的积分来直接计算热冲击过程中裂纹尖端的应力强度因子过渡过程。热权函数与时间τ无关，由于免除了对每一时刻τ所需作的有限元或边界元分析，计算过程大大简化，计算效率得到极大提高，本文将热权函数与有限元法直接耦合，给出了基于刚度阵导数法的轴对称问题的热权函数计算格式，实例计算表明，本文给出的热权函数计算格式具有满意的计算精度。 |
| 英文摘要: |
| Thermal weight function (TWF) method was introduced to calculate thermal stress intensity factors (SIF) in axisymmetric thermal shock problems. TWF is independent of time. Since repeated FEM or BEM analyses for every instant are avoided by using the TWF method, the calculation procedure is greatly simplified, and the efficiency is raised to a great deal. Formulas which combine the TWF method with FEM were given for axisymmetric problems based on the stiffness matrix derivative method. Examples show good results for the present formulations. |
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