Work

A New Uncertain Analysis Method for the Prediction of Acoustic Field with Random and Interval Parameters

Year: 2016

Type: article

Abstract: For the frequency response analysis of acoustic field with random and interval parameters, a nonintrusive uncertain analysis method named Polynomial Chaos Response Surface (PCRS) method is proposed. In the proposed method, the polynomial chaos expansion method is employed to deal with the random parameters, and the response surface method is used to handle the interval parameters. The PCRS method does not require efforts to modify model equations due to its nonintrusive characteristic. By means of the PCRS combined with the existing interval analysis method, the lower and upper bounds of expectation, variance, and probability density function of the frequency response can be efficiently evaluated. Two numerical examples are conducted to validate the accuracy and efficiency of the approach. The results show that the PCRS method is more efficient compared to the direct Monte Carlo simulation (MCS) method based on the original numerical model without causing significant loss of accuracy.

Source: Shock and Vibration

DOI: 10.1155/2016/3693262

Authors: Mingjie Wang, Zhimin Wan, Qibai Huang

Institutions: State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Nantong Vocational University

Language: English

Topic: Probabilistic and Robust Engineering Design

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,760

Funder: National Natural Science Foundation of China