Dynamic Reliability Sensitivity Design of Mechanical Components with Arbitrary Distribution Parameters

2011 ◽  
Vol 199-200 ◽  
pp. 487-494
Author(s):  
Xin Gang Wang ◽  
Bao Yan Wang ◽  
Li Sha Zhu ◽  
Hao Lu
Keyword(s):  
Theoretical Data ◽  
Computational Method ◽  
Design Parameters ◽  
Arbitrary Distribution ◽  
Random Load ◽  
Reliability Design ◽  
Dynamic Reliability ◽  
Reliability Sensitivity ◽  
Distribution Parameters ◽  
Mechanical Components

The variation rules of strength, load, and reliability of mechanical components are studied with a change in time, and a model is established for dynamic reliability of mechanical components under the random load acting. By combining the theory of reliability design with the method of sensitivity analysis, the computational method of dynamic reliability sensitivity design with arbitrary distribution parameter is proposed based on the methods Edgeworth and perturbation, and the problem of dynamic reliability sensitivity design of mechanical components distributed arbitrary distribution is solved as well as the variation rules of dynamic reliability sensitivity are given. The variation of reliability is studied as design parameters change a little, which provides theoretical data for dynamic reliability design of mechanical components.

Dynamic Reliability Sensitivity Design of Cutting Tool with Arbitrary Distribution Parameters

2013 ◽  
Vol 816-817 ◽  
pp. 201-205
Author(s):  
Xin Gang Wang ◽  
Bao Yan Wang ◽  
Chang You Li ◽  
Chun Mei Lv
Keyword(s):  
Cutting Tool ◽  
Theoretical Data ◽  
Computational Method ◽  
Design Parameters ◽  
Arbitrary Distribution ◽  
Random Load ◽  
Reliability Design ◽  
Dynamic Reliability ◽  
Reliability Sensitivity ◽  
Distribution Parameters

The variation rules of strength, load, and reliability of cutting tool are studied with a change in time, and a model is established for dynamic reliability of cutting tool under the random load acting. By combining the theory of reliability design with the method of sensitivity analysis, the computational method of dynamic reliability sensitivity design with arbitrary distribution parameter is proposed based on the methods Edgeworth and perturbation, and the problem of dynamic reliability sensitivity design of cutting tool distributed arbitrary distribution is solved as well as the variation rules of dynamic reliability sensitivity are given. The variation of reliability is studied as design parameters change a little, which provides theoretical data for dynamic reliability design of cutting tool

Optimization Design on Dynamic Reliability of a Tension Bar

2011 ◽  
Vol 415-417 ◽  
pp. 807-812
Author(s):  
Xin Gang Wang ◽  
Bao Yan Wang ◽  
Xiu Feng Tan
Keyword(s):  
Optimization Design ◽  
Theoretical Data ◽  
Computational Method ◽  
Design Parameters ◽  
Arbitrary Distribution ◽  
Random Load ◽  
Reliability Design ◽  
Dynamic Reliability ◽  
Reliability Sensitivity ◽  
Mechanical Components

This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. The variation rules of strength, load, and reliability of mechanical components are studied with a change in time, and a model is established for dynamic reliability of mechanical components under the random load acting. By combining the theory of reliability design with the method of sensitivity analysis, the computational method of dynamic reliability sensitivity design with arbitrary distribution parameter is proposed based on the methods Edgeworth and perturbation, and the problem of dynamic reliability sensitivity design of mechanical components distributed arbitrary distribution is solved as well as the variation rules of dynamic reliability sensitivity are given. The variation of reliability is studied as design parameters change a little, which provides theoretical data for dynamic reliability design of mechanical components.

Dynamic Reliability Sensitivity Analysis of Torsion Bar

2008 ◽  
Vol 44-46 ◽  
pp. 275-282 ◽  
Author(s):  
Xin Gang Wang ◽  
Yi Min Zhang ◽  
Y.F. Yan ◽  
Bao Yan Wang
Keyword(s):  
Sensitivity Analysis ◽  
Design Theory ◽  
Equation Model ◽  
Design Parameters ◽  
Random Load ◽  
Reliability Design ◽  
Dynamic Reliability ◽  
Reliability Sensitivity ◽  
Mechanical Components ◽  
Torsion Bar

In this paper, the variation rules of strength, load, reliability and failure rate of mechanical components are studied with time, and a state equation model for dynamic reliability of mechanical components is established under random load. Meanwhile, reliability index is obtained by using Second moment method and perturbation method. Based on the reliability design theory and sensitivity analysis method, torsion-bar is taken as an example, and the dynamic reliability sensitivity of torsion-bar is extensively discussed and a computing method is presented for dynamic reliability sensitivity design. The variation rules of dynamic reliability sensitivity are obtained and the effects of design parameters on reliability of torsion-bar are studied. As a result, the proposed method provides theoretical basis for reliability design of torsion bar.

Gradual Change Reliability Sensitivity Design for Tool Based on Measured Information

2013 ◽  
Vol 341-342 ◽  
pp. 528-533
Author(s):  
Bao Yan Wang ◽  
Xin Gang Wang
Keyword(s):  
Random Parameter ◽  
Distribution Parameter ◽  
Computational Method ◽  
Arbitrary Distribution ◽  
Measurement Information ◽  
Gradual Change ◽  
Load Effect ◽  
Reliability Design ◽  
Reliability Sensitivity ◽  
Mechanical Components

It brings certain error to reliability design of mechanical components that now most reliability design aiming at establishing pure theoretical mathematical model, without considering arbitrary distribution and variation rules of parameters. In this paper, the variation rules of strength and load effect are studied, the computational method of gradual change reliability is given. By combining the theory of reliability design with the method of sensitivity analysis, the restrictions on random variable distribution types are loosen, the gradual change reliability sensitivity design method with arbitrary distribution parameter is proposed based on the measurement information. Under the circumstance that knowing the first four order moments of basic random parameter, reliability sensitivity design with arbitrary distribution parameter can be brought about by using computer program, which provides the theoretical basis for structural design and life forecast of mechanical components.

Robust Reliability Design of Banjo Flange With Arbitrary Distribution Parameters

2005 ◽  
Vol 127 (4) ◽  
pp. 408-413 ◽  
Author(s):  
Yimin Zhang ◽  
Xiangdong He ◽  
Qiaoling Liu ◽  
Bangchun Wen
Keyword(s):  
Robust Design ◽  
Design Parameters ◽  
Arbitrary Distribution ◽  
Reliability Design ◽  
Edgeworth Series ◽  
Reliability Sensitivity ◽  
Distribution Parameters ◽  
Reliability Based Optimization ◽  
First Four Moments ◽  
Robust Reliability

The perturbation method, the Edgeworth series, the reliability-based optimization, the reliability sensitivity technique, and the robust design are employed to present a practical and effective approach for the robust reliability design of the Banjo flange with arbitrary distribution parameters on the condition of known first four moments of original random variables. The theoretical formulas of robust reliability design for the Banjo flange with arbitrary distribution parameters are obtained. The respective program can be used to obtain the robust reliability design parameters of the Banjo flange with arbitrary distribution parameters accurately and quickly.

Dynamic reliability-based robust optimization design for a torsion bar

2008 ◽  
Vol 223 (2) ◽  
pp. 483-490 ◽  
Author(s):  
X-G Wang ◽  
Y-M Zhang ◽  
B-Y Wang
Keyword(s):  
Robust Optimization ◽  
Optimization Design ◽  
Computational Method ◽  
Random Load ◽  
Dynamic Reliability ◽  
Reliability Sensitivity ◽  
Robust Optimization Design ◽  
Mechanical Components ◽  
Reliability Based Optimization ◽  
Torsion Bar

The variation rules of strength, load, and reliability of mechanical components are studied with a change in time, and a model is established for dynamic reliability of mechanical components under the random load acting. According to the model, the design of dynamic reliability sensitivity is discussed, and the approach to calculate it is proposed. By combining the theory of reliability-based optimization design with the method of sensitivity analysis, the computational method of dynamic reliability-based robust optimization design is established, and the problem of dynamic reliability-based robust optimization design of a torsion bar is solved.

An approach of robust reliability design for mechanical components

2005 ◽  
Vol 219 (3) ◽  
pp. 275-283 ◽  
Author(s):  
Y M Zhang ◽  
X D He ◽  
Q L Liu ◽  
B C Wen
Keyword(s):  
Robust Design ◽  
Design Method ◽  
Random Variables ◽  
Design Parameters ◽  
Theoretical Formula ◽  
Reliability Design ◽  
Reliability Sensitivity ◽  
Mechanical Components ◽  
Reliability Based Optimization ◽  
Robust Reliability

The reliability-based optimization, the reliability sensitivity technique, and the robust design are employed to present a practical and effective approach of robust reliability design for mechanical components on the condition of known probabilistic characteristics of original random variables. The theoretical formula of robust reliability design for mechanical components is obtained. The respective program can be used to obtain the robust reliability design parameters accurately and quickly. According to the numerical results, the method proposed is a convenient and practical robust reliability design method.

scholarly journals Fatigue Reliability Sensitivity Analysis of Complex Mechanical Components under Random Excitation

2011 ◽  
Vol 2011 ◽  
pp. 1-17 ◽  
Author(s):  
Hao Lu ◽  
Yimin Zhang ◽  
Xufang Zhang ◽  
Xianzhen Huang
Keyword(s):  
Sensitivity Analysis ◽  
Random Excitation ◽  
Design Parameters ◽  
State Function ◽  
Fourth Moment ◽  
Fatigue Reliability ◽  
Random Load ◽  
Reliability Sensitivity ◽  
Reliability Sensitivity Analysis ◽  
Mechanical Components

Fatigue failure is the typical failure mode of mechanical components subjected to random load-time history. It is important to ensure that the mechanical components have an expected life with a high reliability. However, it is difficult to reduce the influence of factors that affect the fatigue reliability and thus a reliability sensitivity analysis is necessary. An approach of fatigue reliability sensitivity analysis of complex mechanical components under random excitation is presented. Firstly, load spectra are derived using a theoretical method. A design of experiment (DOE) is performed to study the stresses of dangerous points according to the change of design parameters of the mechanical component. By utilizing a Back-Propagation (BP) algorithm, the explicit function relation between stresses and design parameters is formulated and thus solves the problem of implicit limit state function. Based on the damage accumulation (DA) approach, the probability perturbation method, the fourth-moment method, the Edgeworth expansion is adopted to calculate the fatigue reliability and reliability-based sensitivity. The fatigue reliability sensitivity analysis of a train wheel is performed as an example. The results of reliability are compared with that obtained using Monte Carlo simulation. The reliability sensitivity of design parameters in the train wheel is analyzed.

Reliability-Based Sensitivity Design of Mechanical Components with Arbitrary Distribution Parameters

2008 ◽  
Vol 44-46 ◽  
pp. 885-892
Author(s):  
Zhou Yang ◽  
Yi Min Zhang ◽  
Li Sha Zhu
Keyword(s):  
Sensitivity Analysis ◽  
Random Parameter ◽  
Design Parameters ◽  
Arbitrary Distribution ◽  
Fourth Moment ◽  
Analysis Method ◽  
Mechanical Joints ◽  
Reliability Sensitivity ◽  
Sensitivity Analysis Method ◽  
Distribution Parameters

In the reliability-based analysis of mechanical joints, as each factor has different effect on the failure of mechanical joints, the effects of design parameters on reliability of the mechanical joints are determined with the reliability-based sensitivity analysis method. Furthermore, the reliability of mechanical joints can be effectively designed. As a matter of fact, if a change of a certain random parameter has great effect on the reliability of mechanical joints, the parameter must be strictly controlled in the course of design and manufacture to ensure reliability. Whereas if a change of a certain random parameter has unobvious effect on the reliability of mechanical joints, it can be treated as a deterministic value to reduce the complexity of the analysis. In this paper, based on the reliability design theory, the sensitivity analysis method and the fourth moment technique, the reliability sensitivity of the mechanical joints with arbitrary distribution parameters is extensively discussed and a numerical method for reliability sensitivity design is presented. The variation regularities of reliability sensitivity are obtained and the effects of design parameters on reliability of the mechanical joints are studied. The method presented in this paper provides reasonable and necessary reliability basis for the design, manufacture, use and evaluation of the mechanical joints.

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