Structural Analysis and Optimization of Vehicle Radiator Support Frame Based on Kriging Model

doi:10.19491/j.issn.1001-9278.2020.08.011

Abstract

Abstract:

Taking a BA01-type vehicle radiator support frame as an example, the effect of the polypropylene/glass fiber proportion in the composites was analyzed by a combination of computer software simulation and the relevant tests. The structural analysis and multi-objective optimization were also performed by constructing a Kriging model through the iSIGHT software. The results indicated that the comprehensive mechanical properties of polypropylene/glass fiber composites were most suitable for the production of vehicle radiator support frame at the glass fiber content of 42 wt%. The main beam and wing plate thicknesses exhibited the greatest influence on the fatigue life of vehicle radiator support frame. The structural parameters including the main beam and wing plate thicknesses were optimized by the Kriging model, and the multipurpose optimization design was realized for the enhancement of fatigue life and the weight reduction of this vehicle radiator support frame.

Key words: polypropylene, glass fiber, vehicle radiator support frame, multiobjective optimization

CLC Number:

TQ320.7

Xinlong CHENG, Lin GAO, Junmin LI, Ye MEI. Structural Analysis and Optimization of Vehicle Radiator Support Frame Based on Kriging Model[J]. China Plastics, 2020, 34(8): 67-70.

Figures/Tables 7

References 11

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编号	A/cm	B/cm	C/cm	D/cm	E/（°）
1	7.200	4.500	1.350	118.998	1.836
2	7.345	4.459	1.541	121.000	1.873
3	7.491	4.705	1.650	101.002	1.982
4	7.636	4.868	1.514	106.997	2.200
5	7.782	4.132	1.595	111.001	1.909
6	7.927	4.295	1.377	108.999	2.127
7	8.073	4.623	1.459	113.003	2.164
8	8.218	4.214	1.405	115.005	1.800
9	8.364	4.950	1.623	103.004	2.091
10	8.509	4.377	1.568	104.995	1.945
11	8.654	4.862	1.432	116.996	2.055
12	8.800	4.541	1.486	99.000	2.018

编号	A/cm	B/cm	C/cm	D/cm	E/（°）
1	7.200	4.500	1.350	118.998	1.836
2	7.345	4.459	1.541	121.000	1.873
3	7.491	4.705	1.650	101.002	1.982
4	7.636	4.868	1.514	106.997	2.200
5	7.782	4.132	1.595	111.001	1.909
6	7.927	4.295	1.377	108.999	2.127
7	8.073	4.623	1.459	113.003	2.164
8	8.218	4.214	1.405	115.005	1.800
9	8.364	4.950	1.623	103.004	2.091
10	8.509	4.377	1.568	104.995	1.945
11	8.654	4.862	1.432	116.996	2.055
12	8.800	4.541	1.486	99.000	2.018

参数名称	优化前值	优化后值	变化幅度/%
A/cm	8	8.63	7.80
B/cm	4.5	5.02	11.50
C/cm	1.5	1.96	30.70

参数名称	优化前值	优化后值	变化幅度/%
A/cm	8	8.63	7.80
B/cm	4.5	5.02	11.50
C/cm	1.5	1.96	30.70

项目	优化前值	优化后值	变化幅度/%
骨架的质量/kg	5.64	4.93	-12.50
骨架的疲劳寿命值	6.13×10⁸	7.24 ×10⁸	18.10