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In this paper, a dynamic reliability based design optimization problem of the lifting gear transmission system is formulated and solved. We focus on two issues in the design process, one is the excitations of the lifting gear transmission system, the random speed input, time variant meshing stiffness, dynamic loads are analyzed. The other is two kinds of reliability constraints, time-invariant reliability...
Generally, multidisciplinary design optimization (MDO) has a good performance when dealing with the coupled relationship among disciplines. However, the preference of designers could not be reflected in MDO. Therefore, some effective approaches, which can reflect preference of designers, should be proposed to handle the optimization problem with increased complexity. In this paper, an effective optimal...
Reliability Based Design Optimization (RBDO) aims to optimize performance function under reliability constraints, which is not considered in the deterministic design optimization. During the past decades, with the advent of powerful computers, lots of literatures focused on developing the methods of RBDO for the accuracy and efficiency. However, with the application of RBDO in various cases, it is...
Generally, multidisciplinary design optimization (MDO) is a deterministic design method, which does not takes uncertainty into account. However, uncertainty cannot be ignored since it has a significant influence on the design results of the engineering system. In this paper, in order to reduce the effect of uncertainty on system performance, First-Order Second-Moment based collaborative optimization...
The increasing complexity of engineering systems has sparked rising interests in multidisciplinary design optimization (MDO). However, the main challenges in MDO are its computational expense and complexity structure. Therefore, to address these challenges, this paper focuses on a new MDO method, interaction prediction optimization approach, which is a design architecture applied in the multidisciplinary...
Life cycle cost is the total cost incurred in the life cycle of a product, including design, development, production, operation, maintenance, support and disposal. Life cycle cost analysis can help engineers to identify equipment and process selection not on the initial purchase cost but rather on the total cost. A reasonable life cycle cost model can lead to a reliable design. In this paper, several...
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