点接触弹流润滑问题的高效直接算法
- 文件大小:274.38KB
- 浏览次数:
- 发布时间:2014-03-22
本资料包含pdf文件1个,下载需要1积分
在复合直接迭代法的基础上,运用分块迭代的思想将方程组降维,通过研究弹性变形影响因子对弹性变形的影响,将压力迭代矩阵由满元阵变为稀疏的带状阵,提出一种新的求解点接触弹流问题的高效直接迭代算法。与复合直接迭代法相比,该算法大大减少了计算量,计算效率至少提高20倍,并且可适用重载工况。将新算法计算结果与Hamrock.Dowson公式计算结果进行比较,并讨论迭代矩阵半带宽与收敛速度、载荷范围、计算精度以及数值稳定性的关系。结果表明,当压力迭代矩阵密度为满阵的22%一25%时,新算法具有最高的计算精度。 Based on the composite direct iterative method,by changing a set of one dimensional problems with block iteration method, and changi two dimensional point contact EHL problem into ng the full elements pressure iterative matrix into a spare one through considering the effect of influence factor of elastic transformation on the elastic transformation, a new and high efficiency direct iterative algorithm for point contact EHL was proposed. Compared with the traditional direct iterative algorithm, the new algorithm method can reduce the computation greatly, can raise the computational efficiency at least 20 times, and can get convergence solution even if under the heavy load cases. The computational results of the new algorithm method were compared with those of Hamrock-Dowson formula, and the relationships of semi-band width of iteration matrix with convergence speed, load range, calculation precision and numerical calculation stability were discussed. The results show that the new algorithm method can get the best calculation precision when the density of the pressure iterative matrix is 22% - 25% of its full elements matrix.
- 1GA/T 600.3-2006 报警传输系统的要求 第3部分 利用专用报警传输通路的报警传输系统
- 2土建安全员岗位实务知识练习题
- 3《设备工程监理规范》(标准草桉送审稿)
- 4219.喷涂法聚氨酯硬泡体在外墙外保温系统中的应用(摘录自浙江建筑08年7期49-52页)
- 5JB-T 4700-2000 压力容器法兰分类与技术条件
- 6浅谈如何预防框架、排架及短肢剪力墙其填充墙的裂缝问题
- 7GB/T 23314-2009 领带
- 8软土处理探讨
- 9机械制造工艺学典型零件加工课件
- 10对焊机,电焊机功率折算
- 11外墙A级防火保温体系优缺点介绍
- 12GB/T 2100-2002 一般用途耐蚀钢铸件
- 13玉兰小区景观绿化及照明设计施工图纸
- 14戴夫布鲁克斯杠杆锁inventor设计
- 15JB/T 8474-1996 商标模切机