| 摘要: |
| 在非线性静力结构变形跟踪技术的研究中，弧长算法在理论上有较明显的优势，但自身存在一些问题。本文中针对这些问题对以下方面做了改进：１）跟踪方向的判定；２）荷载增量因数的计算与选择；３）弧长调节因数的改进。最后给出算例验证了改进后方法的有效性。 |
| 关键词: 有限元 静力结构 非线性跟踪分析 弧长算法 |
| DOI： |
| 修订日期：1999-10-22 |
| 基金项目:国家自然科学基金 |
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| The Improvement of the Arc-length Computation Methods |
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| Abstract: |
| Lots of methods were developed in structural nonlinear tracing analysis, and the Arc length method has been found to have more advantageous among them. But several other problems have arisen due to the features of this method. The main results presented in this paper are: (1) the determination of tracing direction; (2) the calculation and choice of load incremental modulus; (3) the improvement of Arc length modified modulus. Finally, several examples are given to prove the efficiency of the modified method. |
| Key words: Arc-length method,trace back,finite element method |
