二次应力是由构件的位移约束引起的。
These are developed by the constraint of displacements of a structure.
目的研究指定位移约束对颌骨的应力分布影响。
Objective To study stress distribution in jawbone tissues around dental implant under displacement constraints.
粗细网格用内插约束单元过渡，电路板端添加位移约束。
The element transition of thick and thin grid was restricted with inside mode, displacement restriction was added at end of circuit board.
正确给定位移约束条件是有限元法计算中必须考虑的重要问题。
It is an important problem to give the displacement constraints correctly in the computation with the finite element method.
通过放松某个位移约束并施加相应的动内力来建立力法的基本体系。
The basic system is established through releasing one of the displacement constraints with the corresponding internal force exposed.
本文处理了具有几何约束、应力约束和位移约束的结构优化设计问题。
Several typical structures with stress, displacement and side constraints have been optimized to illustrate the power of this method.
研究裂纹端部三维应力约束、塑性约束和位移约束等对谱载疲劳裂纹扩展的影响。
The objective of this paper is to study the effects of three dimensional constraints on fatigue crack growth under aircraft spectrum loading.
揭示了锚杆对岩体提供应力和位移约束机理。从而为深部不稳定巷道的支护设计与稳定性分析提供了依据。
The results show that bolts can offer both stress constraint and displacement constraint to rock mass, and provide a basis for support design and stability...
本文通过引入弹性约束刚度矩阵和结构位移约束列阵，提出了结构有限元分析中处理阶跃型弹性约束的一种有效方法。
This paper presents a effective method dealing with step elastic supports in structural finite element analysis by inducing elastic support stiffness and structural displacement support matrices.
结论为：无论框架的结构和荷载特征如何，在满足应力约束的前提下，只要恰当改变梁或柱的截面尺寸，用复形法即可得到位于位移约束边界上的最优点。
This model is based on a complex shape model and with it the optimal result can be obtained for most light frame structures and the restraining conditions can be satisfied.
应用虚位移原理和结合考虑材料交界面上的约束条件，文章建立了接触单元的刚度矩阵和等效荷载向量。
Employing the virtual displacement principle and considering constraint conditions of material interface, the stiffness matrix and equivalent load vector for this element are established.
本文给出了具有多个频率、位移和应力约束的结构最轻重量设计。
This paper presents a minimum weight design method of structures with multi frequency, displacement and stress constraints.
在此基础上计算了弹性无孔洞钢拱在不同荷载、不同约束、不同截面尺寸等条件下的极限承载力和顶点竖向位移。
Then the ultimate load-carrying capacity and the vertical top displacement of elastic steel arches are computed for different restrictions, different loads and different section sizes.
建立了多工况下具有位移和体系可靠性约束的桁架结构拓扑优化设计数学模型。
The topology optimal model of truss structures with the constraints of displacement and systematic reliability under multiple load cases is constructed.
全变换方法用于处理每一边界约束点，对刚度矩阵和位移矢量作相应的算子运算。
The full transformation method deals with each boundary constraint node, and for stiff matrices and displacement vector, using operator transformation, relative operator calculation is performed.
本文运用了约束关系式、投影和矩阵运算等方法对空间RSCR、RRSRR、RRRSR、RERRR和RRERR等机构的位移进行分析。
The author applies constraint relations, projective method and matrix operations to the displacement analyses of spatial RSCR, RRSRR, RRRSR, RERRR, and RRERR mechanisms.
明确了虚位移原理的变分约束条件和变分自然条件。
The boundary condition of restriction and the natural condition of variation for the virtual principle of displacement are given too.
第二步是以车轮的质量为目标函数，以车轮的应力、径向及横向位移为约束函数，以车轮辐板形状为设计变量进行设计。
The second step is taking the mass of wheel as target function. The stress, radial and cross displacement of wheel as restrain function, the spoke profile of wheel as design variable.
没有外部负载有应用，与一个极端的节点在底层外表被以为具有零位移纵向方向，另一种是完整约束的。
No external loads are applied, and one of the extreme nodes in the bottom surface is considered to have zero displacement in the longitudinal direction, while the other is fully constrained.
优化的约束条件包括应力、刚度、位移、频率、临界压力及动响应。
The optimization constraints can be stress, stiffness, displacement, frequency or buckling load and dynamic response.
结果：在跖趾关节运动受到约束后，人体其它关节角位移峰-峰值和角速度峰-峰值均有明显变化。
Result: the apparent differences can be seen between the peak angular displacements and velocities of each joint for subjects with and without MP joints constraint.
用ICM方法建立了静位移及频率约束下、重量最小为目标的连续体结构拓扑优化模型。
The topological optimization model of continuum structure that minimizes weight and subjects to static displacement and frequency constraints is established by ICM method.
因为压顶圈梁可改变支护桩的内力与位移，二者在空间中相互约束，彼此协调。
Because top beam can change internal force and displacement of supporting pile, and both them restrict and correspond each other in space.
以节点自由度耦合的方式，给自由度耦合节点以强制位移，用直接求出自由度耦合节点约束反力的方法来求抽筒力。
The reaction force, that is extracting force, is solved directly by coupling DOFS of nodes and loading the DOFS nodes displacement.
对该模型施加适当的约束和载荷，通过预前共轭梯度法，计算得到了轴类零件在常见工况-弯曲和扭转载荷作用下的位移、应力、应变等力学特性。
Results of displacement, stress and strain of the shaft under the common loads of bend and torsion are obtained by Pre-condition conjugate gradient method.
虚位移是在约束容许的条件下可能发生的。
The virtual displacement is an arbitrary one permitted by the constraints at a fixed time.
提出了一种在对极几何约束下来求取三角形网格结点位移的方法。
A method to determine mesh node displacement using Epipolar geometry is proposed.
其次，引入有限差分法与双参数法，考虑桩底的几种约束情况，推导了锚索桩内力与位移计算方法。
Secondly, by the finite difference method and two-parameter method, this study derives the calculation on the inter force and displacement of the anchor piles.
可解决多约束问题，约束条件考虑了应力、应变、最大位移、固有频率及结构屈曲失稳等多种因素。
It also can be used in solving multi-constraint optimization problem, such as constraints on stresses, strains, maximum displacements, natural frequency and buckling instability of structure, etc.
然后论述了约束加在虚位移上的条件及其线性化的两种方法之间的联系。
Then it deals with the condition exerted on virtual displacement by restraint and the connection between the two methods of linearization of the restrained condition.
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