Preparation and thermodynamic analysis of the porous ZrO2/(ZrO2 + Ni)   functionally graded bolted joint

doi:10.1016/j.compositesb.2015.07.018

CORC > 北京大学 > 工学院

	Preparation and thermodynamic analysis of the porous ZrO2/(ZrO2 + Ni) functionally graded bolted joint
	Zhou, Wenbin ; Ai, Shigang ; Chen, Mingji ; Zhang, Rubing ; He, Rujie ; Pei, Yongmao ; Fang, Daining
刊名	COMPOSITES PART B-ENGINEERING
	2015
关键词	Ceramic-matrix composites (CMCs) Thermomechanical Finite element analysis (FEA) Joints/joining FINITE-ELEMENT SIMULATION RESIDUAL-STRESS COMPOSITE JOINTS DESIGN FABRICATION CERAMICS PINS
DOI	10.1016/j.compositesb.2015.07.018
英文摘要	Ceramic-metal functionally graded materials (FGMs) have been extensively used in aerospace engineering where high strength and excellent heat insulation materials are desired. In this paper, the thermodynamic behavior of the Thermal Protection System (TPS) used bolted joints made up of porous ZrO2/(ZrO2 + Ni) FGMs is investigated by finite-element (FE) modeling. The bolted joint is subjected to reentry heating corresponding to the Access to Space Vehicle. Thermodynamic simulations are carried out to yield the transient response of the porous ZrO2/(ZrO2 + Ni) functionally graded bolted joint (FGBJ). The effects of the preload on the thermomechanical behavior and service reliability of the bolted joint are numerically analyzed in detail by ABAQUS codes. It is found that the preload relaxation of the bolted joint occurs at elevated temperature, and the preload has significant influence on service reliability of the bolted joint under transient thermomechanical circumstances. With the increase of the preload, stress concentration which occurs at the root of the first thread of the bolt increases rapidly and predominates in service reliability. Proper preload is thus defined to balance the service reliability and tightness of the bolted joint. Further studies show that the shape of the nut has a great effect on the stress concentration of the thread, the optimized nut is designed to reduce the stress concentration of the thread, and thus the reliability of the bolted joint is also improved. (C) 2015 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [11090330, 11090331, 11102003, 11472038]; National Basic Research Program of China (973 Program) [2010CB832701, 2011CB610303]; Foundation of the Author of National Excellent Doctoral Dissertation of China [201029]; SCI(E); EI; ARTICLE; sgai@pku.edu.cn; mjchen81@gmail.com; 13-22; 82
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415263]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, Wenbin,Ai, Shigang,Chen, Mingji,et al. Preparation and thermodynamic analysis of the porous ZrO2/(ZrO2 + Ni) functionally graded bolted joint[J]. COMPOSITES PART B-ENGINEERING,2015.
APA	Zhou, Wenbin.,Ai, Shigang.,Chen, Mingji.,Zhang, Rubing.,He, Rujie.,...&Fang, Daining.(2015).Preparation and thermodynamic analysis of the porous ZrO2/(ZrO2 + Ni) functionally graded bolted joint.COMPOSITES PART B-ENGINEERING.
MLA	Zhou, Wenbin,et al."Preparation and thermodynamic analysis of the porous ZrO2/(ZrO2 + Ni) functionally graded bolted joint".COMPOSITES PART B-ENGINEERING (2015).