80t级通用敞车钢结构设计
Design of general purpose gondola car steel structure 80t
ABSTRACT:General-purpose gondola car plays an important part in railway goods
transport,and to improve the carrying capacity and reduce the weight of gondola car is
beneficial in raising transport efficiency and reducing transport costs.On the
premise of meeting the design requirements of static strength and fatigue strength,
to realize the light of railway cars is the derection of structure research.According to
the strength requirements of TB/T1335一1996,utilized linear and nonlinear Finite
Element Analysis technology to analyze the static strength of the 80 t general-purpose
gondola carbody under various load cases,to find out the parts where the strength was
surplus.The static strength analysis of gondola carbody provided a reasonable basis
for the lightweight design.the parametric model of gondola carbody was
established by using the ANSYS Parametric Design Language.The analysis was
accomplished with different design variables and expounded an optimized design
scheme which with the thickness,geometrical size and relative position of the main
member plate on the carbody as the design variables.With the lightest weight of
gondola carbody as the objective function,considering several load cases,the gondola
carbody was optimized under the strength and stiffness constraints.The stress spectra was derived by combining the static stresses under the fatigue load cases and load
spectrum.The fatigue strength for the optimized carbody was verified with the method
which was factual stress and the practical fatigue characteristic of a comparable
component or part.The results showed that the static strength and fatigue strength of
the 80t general-purpose gondola carbody could meet the standard
requirements.The weight of the optimized carbody was reduced 10.9% and the
optimization effect was obvious.
KEY WORDS: heavy haul transportation;gondola; static strength; optimization
design;fatigue strength 目录
第一章 绪论 1
1.1 选题意义及研究价值 1
1.2 国内外研究现状和发展 2
1.3 论文的主要研究内容 3
第二章 敞车车体结构设计 5
2.1 车体结构设计要求 5
2.2 车体结构设计 . 5
2.2.1 车体选材 5
2.2.2 车体结构工艺 6
2.2.3 车体主要结构的设计 8
2.2.4 车体结构轻量化设计 11
第三章 敞车车体结构静强度分析 13
3.1 车体静强度分析模型的建立 . 13
3.1.1 几何模型的建立 13
3.1.2 有限元模型的建立 . 14
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