A Method for Determining Sensitive Parameters of Air Spring Structure
A technology of air springs and sensitive parameters, applied in electrical digital data processing, instruments, geometric CAD, etc., can solve the problems of excessive calculation and difficult implementation, and achieve the effect of reducing sample space, avoiding repeated design, and compact association
Active Publication Date: 2021-02-19
汉思科特(盐城)减震技术有限公司
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[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for determining the sensitive parameters of the air spring structure, which can avoid the difficulty of implementing the traditional method and the problem of excessive calculation, and realize the sensitive parameters of the air spring structure of the heavy-duty vehicle. Efficient analysis of
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[0049] The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0050] Such as figure 2 , 3 As shown, a method for determining the sensitive parameters of an air spring structure includes the following steps:
[0051] (1) In the present embodiment, according to the pre-design scheme of the air spring geometric structure of the heavy-duty vehicle, utilize SolidWorks or Peo / E, Siemens NX, Catia software to set up the three-dimensional solid model of the air spring structure and the gas in the air bag, the three-dimensional solid model is as follows figure 1 shown.
[0052] (2) In this embodiment, through the Abaqus finite element analysis software, according to the geometric characteristics of the air spring, the discrete structure solid model of the three-dimensional hexahedron solid element is used, and the compressed gas in the air spring system is simulated by the hydrostatic ...
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The invention discloses a method for determining sensitive parameters of an air spring structure, which includes constructing a digital model, performing finite element analysis on the digital model, and summarizing key structural design parameters such as rubber layer thickness, material, cord properties, cover plate thickness, etc. , and set the allowable range of its parameters, within the given parameter range, use different generalized stochastic polynomials to construct a set of orthogonal functions to approximate the output and random variables of the model. On the basis of the obtained approximate explicit function expression, the moment estimation of the model output is carried out through Monte-Carlo simulation, and on the basis of the sensitivity calculation results, the influence of individual changes of each parameter and simultaneous changes of different parameters on the model output is analyzed degree, so as to determine the interaction between parameters and the sensitive parameters of structural characteristics. The invention can solve the problem that the traditional method is difficult to realize, can avoid repeated design in the pre-design stage, greatly shorten the research and development cycle, and save research and development costs.
Description
technical field [0001] The invention belongs to the field of air springs, and in particular relates to a more accurate and efficient method for determining sensitive parameters of air spring structures. Background technique [0002] The air spring damping system makes full use of rubber elasticity and air pressure to obtain comprehensive vibration absorption, vibration isolation, noise prevention and cushioning performance of the vehicle. Compared with traditional leaf springs, vehicles using air spring damping systems have obvious advantages in terms of comfort, economy, light weight, reliability, noise reduction and vibration isolation performance. The air spring damping system has been widely used in commercial vehicles in developed countries such as Europe and the United States, and the penetration rate in heavy-duty vehicles exceeds 80%. Air spring system development and design technology. [0003] Heavy-duty vehicle air springs are mostly composed of upper cover plat...
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IPC IPC(8): G06F30/23G06F30/17G06F119/14
Inventor 张振果杨浩森
Owner 汉思科特(盐城)减震技术有限公司