Multi-objective Topology Optimization of an Automotive Cradle

A cradle is a separate structure from automotive chassis, which is used to support the powertrain and

suspension system. With the application of cradle structure, the noise and vibration transmitted to

passengers will be reduced and the stiffness of attachments will be increased. In other words, the riding

comfort and the product reliability are improved. The research project is to design and optimize an

automotive cradle considering five dominant performance requirements: local static stiffness,

crashworthiness, NVH, durability and weight. Multi-objective optimization method will be used to

find the optimum designs and their trade-offs. Topology optimization will be introduced into the early

design phase to determine the material distribution, which could depend less on experience and give an

objective and effective preliminary structure. Size optimization will then be implemented to determine

the thickness of the cradle sections in a detailed design phase. By using this advanced optimization, the

design period would be shortened, experience-dependency would be decreased, and the cost …

Faculty Supervisor:

Il Yong Kim

Student:

Partner:

Discipline:

Engineering

Sector:

Manufacturing

University:

Queen's University

Program:

Accelerate

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Government

Mitacs Partners