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1)  bending force
弯曲力
1.
The formula to calculate bending force is derived by energy metho
分析了帽形弯曲过程中的弯曲与反弯曲现象,给出了产生弯曲与反弯曲变形所满足的条件,用能量法导出了弯曲力的计算式。
2.
The forces on the sheet blank U-type bending are analyzed,and the formula to calculate the bending force is derivedThe effecting factors on the bending force are discussed in great detail,including clearance,relative radius of punch and die,friction coefficient.
分析了U形弯曲时板坯的受力,导出了弯曲力的计算式,详细讨论了间隙、凸凹模相对圆角半径、摩擦系数等对弯曲力的影响。
3.
By utilizing work-hardening of power function law, considering displacement of neutral layer and thickness change of material in deforming zone,a new theoretical calculation formula about bending force is established, alse a new theoretical model about springback is discussed and proposed based on plastic deformation characteristics of work-hardening of power function law.
为了验证上述理论,对两种研究材料进行了4组工艺试验,利用补偿模具的参数计算公式设计实验模具,获得了相应的弯曲力行程曲线、回弹值、最大弯曲力
2)  bending stress
弯曲应力
1.
Finite element analysis on the bending stress for roller spur bevel gear based on ANSYS;
基于ANSYS的滚齿直齿圆锥齿轮弯曲应力有限元分析
2.
Analysis of tooth root bending stress for spiral bevel gears;
弧齿锥齿轮齿根弯曲应力分析
3.
Calculation of bending stress of steel-concrete composite beam considering slippage effect;
考虑滑移效应的钢—混凝土组合梁弯曲应力计算
3)  ordinary bending
横力弯曲
1.
This paper introduces the designing type experiment in mechanics of materials, including the contents of ordinary bending experiment and how to design the experimental device.
该文介绍了材料力学设计性实验,即横力弯曲实验的具体内容及实验装置的设计方法,阐述了设计性实验对提高学生创新能力的作用,尝试将设计性、综合性、研究性实验融为一体的实验教学模式。
4)  bending resistance force
弯曲阻力
5)  bending moment
弯曲力矩
1.
This article analyses the state and the distribution of the stress and the strain in the deformed region of steel tube,and then introduces the calculation equation of tube bending moment derived,and also how to apply it to the design of a tube bender.
分析了管材弯曲变形区的应力应变状态及其分布 ,导出了管材弯曲力矩的计算公式 ,并将之应用于弯管机设
2.
According to different deformation rates in various parts of rail head after rail straightening,stress and bending moment were analyzed in the process of rail straightening by means of the mechanics of materials and elasticity.
针对钢轨矫直后轨头各部分展宽量不一样的现象 ,运用材料力学、弹塑性力学等知识对钢轨矫直过程的应力及弯曲力矩进行了分析 ,并对实验室实物钢轨 3点弯曲模拟试验结果进行了分析 ,初步掌握了钢轨矫直过程中轨头不均匀变形和表面变形的原因。
3.
This paper analyses the cause of producing impression on the end of round steel sheared by arc knife-edge shears and puts forward the method to produce anti-bending moment by increasing the length of force arm based on lever principle for enhancing the end quality of sheared round stee
分析了弧剪刃剪切圆钢时轧件剪切端头产生压痕的原因,提出了运用杠杆原理,增加力臂长度,产生反弯曲力矩,以及提高剪切圆钢的端头质量的方法。
6)  static bending
静力弯曲
1.
Three-dimensional elasticity solution of the static bending of simply supported rectangular FGM plates lying on an elastic foundation is presented by virtue of state-space formulations.
利用状态空间法,对四边简支的功能梯度矩形板在弹性地基上的静力弯曲进行了三维弹性分析。
补充资料:弯曲工艺的概念及弯曲件

1.弯曲工艺:是根据零件形状的需要,通过模具和压力机把毛坯弯成一定角度,一定形状工件的冲压工艺方法。


2.弯曲成形工艺在工业生产中的应用:应用相当广泛,如汽车上很多履盖件,小汽车的柜架构件,摩托车上把柄,脚支架,单车上的支架构件,把柄,小的如门扣,夹子(铁夹)等。 


弯曲的基本原理:以V形板料弯曲件的弯曲变形为例进行说明。其过程为: 
   1. 凸模运动接触板料(毛坯)由于凸,凹模不同的接触点力作用而产生弯矩, 在弯矩作用下发生弹性变形,产生弯曲。
  2. 随着凸模继续下行,毛坯与凹模表面逐渐靠近接触,使弯曲半径及弯曲力臂均随之减少,毛坯与凹模接触点由凹模两肩移到凹模两斜面上。(塑变开始阶段)。
  3.随着凸模的继续下行,毛坯两端接触凸模斜面开始弯曲。(回弯曲阶段)。
   4.压平阶段,随着凸凹模间的间隙不断变小,板料在凸凹模间被压平。
  5. 校正阶段,当行程终了,对板料进行校正,使其圆角直边与凸模全部贴合而成所需的形状。 


弯曲变形的特点:  弯曲变形的特点是:板料在弯曲变形区内的曲率发生变化,即
弯 曲半径发生变化。从弯曲断面可划分为三个区:拉伸区、压缩区和中性层。

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