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modal stress
相关语句
  模态应力
     FEM-based Fatigue Analysis Using Modal Stress Recovery Method
     基于模态应力恢复的有限元疲劳分析法
短句来源
     Virtual Fatigue Test Method for Auto Parts Based on Modal Stress Recovery
     基于模态应力恢复的汽车零部件虚拟疲劳试验方法
短句来源
     Applying the concepts of modal stress and modal strain, a constitutive integration algorithm is developed in this paper.
     本文运用模态应力,模态应变等概念,发展了一种本构积分中点算法。
短句来源
     Based on finite-element modal analysis,flexible multi-body dynamics and fatigue life prediction theory and using modal stress recovery technique,the fatigue loads history of auto parts are obtained and applied to virtual fatigue test.
     基于有限元模态分析、柔性多体动力学求解和疲劳寿命预测的相关理论,通过模态应力恢复得到了汽车零部件疲劳载荷历程,并将其应用于虚拟疲劳试验,解决了汽车设计过程中无法快速、准确预知零部件疲劳寿命的难题。
短句来源
  相似匹配句对
     Air Spring's Stress and Modal Analysis
     空气弹簧应力与模态分析
短句来源
     They stress the analysis and phenomenon of the modal adverb.
     第三章至第七章是文章的重点,重在考察分析情态副词的各种现象。
短句来源
     The Interpretation of Stress
     应激释义
短句来源
     Stress and hippocampus
     应激与海马
短句来源
     The system modal
     用本方法可以识别出系统的模态参数(包括应变模态、应力模态)。
短句来源
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This paper proposes some new basic concepts:1. The standard representations of the state of stress ∑ and the state of strain 6 are given by (2.13). When the system of coordinates is changed ∑ and∈ are transformed with the same orthogonal matrix H (see 2.16)).2. In any anisotropic elastic body, there exists an elastic modulus called eigenmo-dulus of elasticity,λi.(i = 1...,6), which is independent of the choice of the coordinate system and represents objective and quantitative characteristic of elastic properties...

This paper proposes some new basic concepts:1. The standard representations of the state of stress ∑ and the state of strain 6 are given by (2.13). When the system of coordinates is changed ∑ and∈ are transformed with the same orthogonal matrix H (see 2.16)).2. In any anisotropic elastic body, there exists an elastic modulus called eigenmo-dulus of elasticity,λi.(i = 1...,6), which is independent of the choice of the coordinate system and represents objective and quantitative characteristic of elastic properties of the body.3. In any anisotropic elastic body, there exists a given form of strain or stress called the mode of the material (?)i(i= 1,..., 6), such that when∑= λiα(?)i, in the same way ∈ =α(?)i.4. The modal stress σ*, = (?)iT∑ and the modal strain ei* = (?)iT∈ are independent of the coordinate system. They have much richer physical meaning than principal stress and principal strain, therefore, they are more useful.5. The normal Hooke's law is given by σi* =λiei*(i =1,..., 6), which is also invariant under the coordinate transformation. Thus the physical law of elasticity theory reaches purely objective representation.6. The structure of the standard space is constructed by Eq. (4.1).In order to demonstrate that the applications of new concepts may be lead to unexpected results, this paper proposes a new theory of strength called rational theory of strength. This theory does not adopt any semi-empirical assumption of material failure, instead, this theory indicates that it can use the results of finite failure testings to predict the strength at any state of stresses. As shown in Eqs. (6.4) and (6.5), it can use two theorems as failure criterion and strength criterion of all homogeneous, anisotropic and ideal elastic body.

本文提出了如下一些新的基本概念: 1.一点应力状态和应变状态的规范表示; 2.各向异性弹性体的本征弹性模量概念; 3.异性主方向概念; 4.规范空间的结构; 5.模态应力和模态应变概念; 6.正则虎克定律。 作为新概念的应用的例子,本文建立了一种新的强度理论——理性强度理论,它与现有一切强度理论有原则性的差别。

A method of evaluating the stress intensity factors of the concrete structures under the seismic loading is presented. The method is based on the response spectrum method. The modal stresses intensity factors are calculated by the energy principle. Then by modal superposition, the total stress intensity factor can be obtained.

本文采用了振型迭加法、反应谱原理,确定有缝混凝土结构在地震荷载作用下的 最大应力强度因子;建议了用能量法确定振型应力强度因了:对理论计算结果进行了 实验验证,符合良好。

In this paper the energy method is employed to determine the modal stress intensity factors of concrete gravity dams under seismic loading.By superposition, the maximum stress intensity factor Kmax can then be obtained. The Kmax values for a gravity dam are calculated concerning to six kinds of horizontal crack with different altitude at upstream face and downstream face. A preliminary analysis for the possibility of crack propagation has been made. The conversion relation of Kmax for similar geometry...

In this paper the energy method is employed to determine the modal stress intensity factors of concrete gravity dams under seismic loading.By superposition, the maximum stress intensity factor Kmax can then be obtained. The Kmax values for a gravity dam are calculated concerning to six kinds of horizontal crack with different altitude at upstream face and downstream face. A preliminary analysis for the possibility of crack propagation has been made. The conversion relation of Kmax for similar geometry with different height dams is also given.

本文采用能量法确定重力坝的地震振型应力强度因子,并由此组合最大地震应力强度因子K_(max)计算了重力坝上、下游坝面不同高度6个长度水平裂缝的K_(max)值,并对裂缝扩展的可能性进行了初步的分析;还给出了相似坝形K_(max)值的换算关系。

 
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