Estimation of fatigue life on bolster spring of freight car in the load spectrum

Fatigue Failure Study on the Crack of Truck Bolster of Freight Car

铁路货车摇枕断裂疲劳失效分析研究

The bogie structure of rigid bolster and non bolster is the development orientation of passenger car bogies. It is the fundamental starting point to research and develop the new generation of air springs.

无摇动台和无摇枕结构是今后客车转向架的发展方向，这是新一代空气弹簧研究开发的基本出发点。

Analysis and Research on Swing Type Freight Car Bogie Swing Bolster and Support

摆动式货车转向架摇动台及支座结构分析研究

The bogie bolster springs bear all the load of freight car. The balance of spring-loaded in each group will directly affect operating life and traffic safety of the freight car.

铁道车辆转向架摇枕弹簧在运行中承受车辆全部载荷，各组弹簧承载是否平衡将直接影响其使用寿命和行车安全。

In this paper, the load which the bolster plates transmit in hydraulic press are analyzed by finite element method with plane stress elements. The results of calculation show the effect of bolster plate height and load area on transmission of load.

采用平面应力单元，对水压机加载时垫板对载荷的传递进行了有限元分析，得到了垫板高度以及加载区域对力的传递的影响规律。

The result shows some cracks appearing on vertical weld connecting web plate of body bolster and draft sill as well as the part between web plate of body bolster and top cover plate.

试验结果表明，无中梁罐车存在枕梁腹板与牵引梁立焊缝裂纹及枕梁腹板与枕梁上盖板之间的裂纹。

Finite element analysis on bolster plate of hydraulic press for divergent transimission load Harbin Institute of Technology

水压机垫板对载荷发散传递的有限元分析

3D contact analysis of forging die and bolster plate on hydraulic press

液压机模具与支承部件的三维接触分析

By computing chiefly the temperature field on the sensitive film of the detector, the influence of different sizes of detector constructions upon some performance parameters is analyzed to optimize the design of a bolometer detector.

主要通过对探测器敏感层温度场的计算，考虑探测器结构尺寸对其性能参数的影响，起到优化设计的作用。

Analysis of the simulation result attests that the thermal isolation structure is important in the design of a bolometer detector thus endorsing the present work.

仿真结果分析证明了热绝缘结构在探测器设计中是占有重要地位的，同时说明本文所做工作是有意义的。

Fuzzy cluster analysis on cotton variety resistant to pink bollworm

棉花种质对棉红铃虫抗性的灰关联聚类分析

A Prediction System for Population Dynamics of Cotton Pink Bollworm Based on Knowledge Base

一个基于知识库的棉红铃虫种群动态预测系统

Some ecological characteristics of the Cotton Pink Bollworm and the type of development

棉红铃虫的若干生态特性及其发生类型

Cluster Analysis of Evaluation Indices for Cotton Resistance to Pink Bollworm

棉花抗红铃虫鉴定指标的聚类分析

Genetic Analysis of Cotton Resistance to Pink Bollworm and Related Traits

棉花对红铃虫抗性及有关性状的遗传分析

Studies on applying the time series analyses as a means for moderately long term prediction of pink bollworm population

应用时间序列分析法进行棉红铃虫中长期数值预报的研究

Newly hatched larvae for monitoring insecticide resistance in the pink bollworm

用初孵幼虫监测棉红铃虫对杀虫剂的抗性

Environmental factors had marked influence on yield and bud or boll shedding and little influence on seed index, lint index and fibre length.

产量和蕾铃脱离受环境影响较大，子指、衣指、衣分和绒长受环境影响较小。

Effects of Brassinolide on the Changes in IAA, ABA Levels in Young Cotton Bolls and Boll Shedding

油菜素内酯对棉花幼铃中IAA，ABA水平变化和棉铃脱落的影响

Changes in endogenous hormone levels in young cotton bolls and their relation to boll shedding

棉花幼铃发育过程中内源激素水平的变化及赤霉酸对它的影响