The thermal residual stress was calculated by the finite element method. Both testing and calculation data proved the reliability of testing data.
采用有限单元法计算了反射镜坯体的热残余应力,通过对比验证了测试结果可靠性。
The process was controllable and could be applied to strip the photoresist residual of diffractive optical element fabricated on the thick substrate.
该工艺具有良好的可控性,解决了在厚基片上制作大口径衍射光学元件时残余光刻胶的去除问题。
The action of tin element in minute alloy cast iron were studied and its mechanisation of affect residual stress were announced in this paper.
研究锡元素在微合金灰铸铁中的行为,揭示其影响铸件残余应力的机理。
Effects of residual stresses on the optical and mechanical performances of MEMS-based microgratings were investigated using finite element simulation method.
微型光栅结构薄膜中由于残余应力的存在引起器件在光学和机械性能方面发生显著变化。
In the numerical simulation of relieving residual stress by hammer peening, contact element technique was firstly adopted for establishing the finite model and calculating the hammer peening.
首次在锤击消除焊接应力的数值模拟研究中,采用接触单元技术建立有限元模型模拟计算锤击作用。
Aim at 7075 aluminium alloy vacuum electronic beam welding, using nonlinear finite element, the numerical simulation of the residual stresses distribution in welding joint was made.
针对7075铝合金中厚板真空电子束焊接过程,采用非线性有限元法,对焊接接头的残余应力分布进行了数值模拟。
The element stiffness and load matrices are derived by Galerkin's weighted residual method.
应用加权余量法推导出单元刚度矩阵和单元载荷矩阵。
The result shows that predicting life by elasticity-plasticity finite element analysis is low and the maximal stress-strain cycle can be calculated accurately by the residual stress method.
研究结果表明,弹塑性有限元分析法预测的寿命偏低,由残余应力可以较准确地确定最大应力应变循环。
The whole process of the relief of the welding residual stress through an explosive treatment is simulated by using the nonlinear dynamic finite element method.
利用非线性动力有限元法对爆炸处理消除焊接接头残余应力的全过程进行了数值模拟。
The contribution of Gauss node to element stiffness should be removed. So the residual stress of Gauss node can be brought to the structure as the load by element node.
当单元局部损伤后,由于损伤高斯点的承载能力全部丧失,需将高斯点对单元刚度矩阵的贡献从单元刚度矩阵中除去,此高斯点上的残余应力通过单元节点作为荷载加在结构上。
To eliminate the residual stress of aluminum alloy pre-stretching board, an elastic-plastic finite element model was developed to simulate the vibratory stress relief (VSR) process.
为消除铝合金预拉伸板中的残余应力,采用弹塑性有限元法对振动时效消除残余应力进行数值模拟。
This paper analyzes the sensitivity of the residual energy and the element residual energy, and their applications to structural damage identification. Some useful conclusions are made.
本文对残余能量和单元残余能量进行了灵敏度分析,并将其用于结构损伤识别,得到了一些有益的结论。
In this paper, the residual welding stresses in a low carbon steel girth butt welded pipe are calculated with a nonlinear finite element code ADINA.
本文利用ADINA非线性分析有限元程序,对低碳钢管道环焊缝接头焊接残余应力进行计算。
Taking a transtibial residual limb as object, three dimensional finite element(FE) models of the residual limb and prosthetic socket were constructed.
以小腿残肢为研究对象,建立了残肢与接受腔三维有限元模型。
Using the theory of thermal elastic-plastic stress, this paper calculates the residual stress distribution in the heavy welded I-section by finite element method.
本文根据热弹塑性应力理论,用有限元法分析了厚板焊接工形截面柱的残余应力。
In this paper the release coefficient of residual stress of blind holes is calculated by using finite element method.
本文采用有限无法对盲孔残余应力释放测量中所需的应力释放系数进行了计算。
Using the well-known weighted residual method and finite element procedure, a nonlinear static analysis parallel with effective stress dynamic analysis has been made.
采用著名的加权剩余值法和等参数有限单元法,对坝体进行非线性静力分析和非线性有效应力动力分析。
Aiming at brazing crack induced by thermal stress during the process of brazing, finite element method was used to analyze the residual stress of joints between the cemented carbide cirque and steel.
针对硬质合金在钎焊冷却过程产生很大的热应力而导致钎焊裂纹这一问题,采用有限元分析方法对硬质合金圆环与钢基体钎焊时冷却过程中的残余应力的分布情况进行模拟。
Uneven distribution of the residual stress is the main element to cause the deformation of a workpiece.
非均匀分布的残余应力是引起工件变形的主要原因。
First, the penalty finite element balance equation for quasi-static problem is obtained by the application of Galerkin weighted residual method and the introduction of penalty parameter.
首先,采用伽辽金加权余量法推导有限元平衡方程,利用罚方法得到求解拟静态问题的罚有限元公式。
Using experimental and finite element analysis methods, the effects of electrode forging force are investigated on residual stress and fatigue behavior of spot welded aluminum alloy joints.
采用试验和有限元分析相结合的方法,考察了锻压力对铝合金电阻点焊接头中残余应力和接头疲劳行为的影响。
To reflect the relationship between clamps and residual stress, finite element models with different clamping schemes were built and the clamping process was simulated.
为了揭示装夹方案对残余应力的影响,利用有限元技术模拟了工件加工过程中不同的装夹方案,并分析了模拟结果。
A new stabilized finite element method by also presented use of residual-free bubbles for the parabolic convection-dominated diffusion problems, and proved the convergence.
文中利用泡函数构造数值,求解抛物型强对流扩散问题的稳定化方法,并给出收敛性分析。
Thermal residual stresses in TiAlN coatings were calculated using the finite element method. Effects of different substrates and interlayer bonding on residual stress field were investigated.
采用有限元方法分析氮铝钛涂层的残余热应力,研究不同的基体及过渡层对残余热应力分布的影响。
This paper developed a three dimension finite element model to analyze stress distribution on residual limb of crus under lumped loads with different displacement constraint conditions.
通过建立三维线性有限元模型来分析在集中载荷作用下小腿肢体残端的应力分布,且分析了不同边界条件对肢体残端应力分布的影响。
The formulas of the spectral element method in polar coordinate are induced and described in detail. Spectral element method is a high-order weighted residual technique.
详细推导了在极坐标系下的谱元方法的具体计算公式,求解了极坐标系下的简单椭圆型二阶偏微分方程;
X2350A X-ray strain instrument was introduced to test the residual stress in the shocked region, and finite element software ABAQUS was used to simulate the stress.
用x2350a型x射线应力衍射仪测试冲击区域残余应力分布情况,并用有限元软件ABAQUS进行模拟。
The residual stress around a coldworked hole is computed with elastoplastic finite element methods of both flow theory and deformation theory.
研究了基于形变理论的金属板料成形快速有限元分析的方法——反向方法 ,并实现了计算程序。
The residual stress around a coldworked hole is computed with elastoplastic finite element methods of both flow theory and deformation theory.
研究了基于形变理论的金属板料成形快速有限元分析的方法——反向方法 ,并实现了计算程序。
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