The formula of vertical stress in the vicinity of strip area of foundation with uniform pressure is deduced by superimposing with the method of corner of rectangulow.
为理解垂直条形均布荷载下地基附加应力公式,文中尝试用角点法,通过叠加求得到矩形面积上均布垂直荷载作用下地基附加应力表达式,然后再根据式中矩形边长的变化情况,推导出垂直均布条形荷载、半无限条形荷载、十字形条形荷载、Z字形条形荷载和无限大面积上均匀满布荷载下的地基附加应力公式,其推导过程体现了有限和无限的辩证关系。
This method was based on LS-DYNA program and user subroutine with good supports by experimental results,and one corner-point strain method for accessing roughly plastic hinge was also put forward.
为验证该方案的可靠性,提出了一种基于LS-DYNA程序和自编子程序的弹塑性时程分析方法,其可靠性得到了试验数据的有力支持,而以"角点应变法"为基础的塑性铰简化评价方法也为结构抗震性能评估提供了一种新的尺度。
This paper made a comparative analysis on the two on machine measurement roundness error methods, which are the angular three point method and displacement three point method.
分析了采用角位移三点法和线位移三点法测量工件圆度误差时 ,两种方法权函数的频域特性 :谐波抑制特性、测量系统权函数总体特性和对噪声的敏感特性 。
