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样条小波有限元的算法研究及其应用
THE STUDY AND APPLICATION OF A SPLINE WAVELETS ELEMENT METHOD
【摘要】 小波有限元方法对解决工程中的大梯度问题有着很强的优势,因为B-样条函数可以为光滑函数提供最好的逼近,作者利用样条函数的上述优点构造了B样条小波单元,提出了一种样条小波自适应有限元算法。由于B-样条函数有明确的表达式,所以容易进行刚度矩阵的计算,从而提高计算效率。算例表明,本文构造的B样条小波单元对于具有奇异性的温度场分析有较高的计算精度。
【Abstract】 Wavelet finite element method has more advantages for high gradient problems. B-spline functions can provide excellent approximation for smooth functions. A B-spline wavelet element is established by using the advantages of the spline function. An adaptive algorithm of spline wavelet element method is proposed. Because the B-spline function has the closed-form, it is easy to calculate the stiffness matrix. The numerical example illustrates that the B-spline wavelet finite element method is an accurate method for the analysis of singular temperature fields.
- 【文献出处】 陕西科技大学学报 ,Journal of Shaanxi University of Science & Technology , 编辑部邮箱 ,2003年06期
- 【分类号】O241.82
- 【被引频次】4
- 【下载频次】245