车载储液容器的轻量化设计及力学分析
关键词 罐体 力学分析 VOF 模型 液体晃动 流固耦合
Title Light-weight design & mechanical analysis of the vehicle storage tanks
Abstract
With the development of our country’s industry, the oil demand is
increasing. However, due to shortage of oil and environmental issues,
transportation costs are higher and higher, special-purpose vehicles users
are urgent to make active efforts to reduce the vehicles’ weight.
In this paper, firstly, based on an idea of light-weight, one kind of oil
tank is designed with aluminum alloy, according to GB 18564.1-2006. Then
a model that is one quarter of the tank is built to simplify static analysis,
according to the force characteristics and good symmetry of the oil tank.
The head and compartment in condition of design pressure is conducted
static analysis independently with ANSYS. The results show that the maximum
stress is on the chamfer, and the relationship between the size of the
chamfer and the maximum stress is found. At last, the dynamics analysis
of the tank truck in breaking process is conducted with FLUENT. 2D model
with the head and only one compartment is built to improve computational
efficiency according to modern researches. The liquid sloshing and
problems of FSI are simulated by VOF model for five liquid filling ratios
from 0.5 to 0.9, and the curve of the maximum pressure is reported. The
results show that the smaller of the ratio, the more fierce of liquid
sloshing, and the greater of the ratio, the more obvious of baffles’
protective effect on the tank. What is more important is that the tank in
condition of liquid filling ratios 0.5 and 0.8 must has additional
protections. Keywords tank mechanical analysis VOF model liquid sloshing FSI
目 次
1 绪论„1
1.1 研究意义„„1
1.2 国内外研究现状概述1
1.3 本课题研究内容、拟采用的研究手段„„6
2 罐体结构设计7
2.1 罐体材质的选择„„7
2.2 罐体设计„„7
2.3 罐体总体结构方案设计„„8
2.4 加工技术要求„„9
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