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    • 3. 发明授权
    • Fatigue life estimating method for spot welded structure
    • 点焊结构疲劳寿命估算方法
    • US07752917B2
    • 2010-07-13
    • US10556388
    • 2003-05-12
    • Noboru Tomioka
    • Noboru Tomioka
    • G01N3/24
    • G06F17/5018G01N3/00G01N2203/0073G01N2203/0214G01N2203/0216G06F2217/42G06F2217/76
    • A fatigue life estimating method for a spot welded structure is provided comprising the steps of providing a shell model of a spot welded structure for a finite element method analyzing process, calculating the nominal structural stress on a nugget as the center of the spot welded structure using a disk bending theory and a two-dimensional elastic theory of the elastodynamics with the partial loads exerted on the nugget and the deflection on the circumference of a circle, D in diameter, in which the nugget is located, which have been calculated by the finite element method analyzing process of the shell model, and estimating the fatigue life of the spot welded structure from the nominal structure stress. According to the method, the fatigue life of the spot welded structure can be estimated easily, readily, and accurately.
    • 提供一种点焊结构的疲劳寿命估计方法,包括以下步骤:提供用于有限元法分析过程的点焊结构的壳模型,计算熔核上的标称结构应力作为点焊结构的中心,使用 圆盘弯曲理论和弹性动力学的二维弹性理论,其中施加在熔核上的部分载荷和圆形圆周上的弯曲,直径(D),其中熔核位于其中,其由有限的 模型的元素分析过程,以及从标称结构应力估计点焊结构的疲劳寿命。 根据该方法,可以容易且准确地估计点焊结构的疲劳寿命。
    • 4. 发明申请
    • Fatigue life estimating method for spot welded structure
    • 点焊结构疲劳寿命估算方法
    • US20090211366A1
    • 2009-08-27
    • US10556388
    • 2003-05-12
    • Noboru Tomioka
    • Noboru Tomioka
    • G01N3/24
    • G06F17/5018G01N3/00G01N2203/0073G01N2203/0214G01N2203/0216G06F2217/42G06F2217/76
    • A fatigue life estimating method for a spot welded structure is provided comprising the steps of providing a shell model of a spot welded structure for a finite element method analyzing process, calculating the nominal structural stress on a nugget as the center of the spot welded structure using a disk bending theory and a two-dimensional elastic theory of the elastodynamics with the partial loads exerted on the nugget and the deflection on the circumference of a circle, D in diameter, in which the nugget is located, which have been calculated by the finite element method analyzing process of the shell model, and estimating the fatigue life of the spot welded structure from the nominal structure stress.According to the method, the fatigue life of the spot welded structure can be estimated easily, readily, and accurately.
    • 提供一种点焊结构的疲劳寿命估计方法,包括以下步骤:提供用于有限元法分析过程的点焊结构的壳模型,计算熔核上的标称结构应力作为点焊结构的中心,使用 圆盘弯曲理论和弹性动力学的二维弹性理论,其中施加在熔核上的部分载荷和圆形圆周上的弯曲,直径(D),其中熔核位于其中,其由有限的 模型的元素分析过程,以及从标称结构应力估计点焊结构的疲劳寿命。 根据该方法,可以容易且准确地估计点焊结构的疲劳寿命。