Finite element analysis of grinding process of long fiber reinforced ceramic matrix woven composites: Modeling, experimental verification and material removal mechanism. Issue 13 (September 2019)

• Record Type: Journal Article
• Authors: Wang, Yuguo; Wang, Haoji; Wei, Jinhua; Lin, Bin; Xu, Jingyu; Fang, Sheng
• Is Part Of: Ceramics international. Volume 45:Issue 13(2019)
• Page Start: 15920
• Page End: 15927
• Publication Date: 2019-09
• Subjects: Composites B -- SiO2 D -- Grinding -- Finite element; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.05.100
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A Finite element analysis (FEA) modeling method for grinding wheel and long fiber reinforced ceramic matrix woven composites (LFRCWCs) specimen was integrated and proposed in this paper. This method was adopted to analyze the grinding process of a 2.5D woven quartz fiber reinforced silicon dioxide ceramic matrix (SiO2 /SiO2 ) composite. Relevant grinding experiments were conducted, whose results verified the accuracy of the FEA method. Based on the FEA and experimental investigation, material removal mechanism in the grinding process of this material was discussed and the following conclusions can be drawn: 1) the modeling method that sets the interface of fibers and matrix with the same mechanical configuration as the matrix can obtain a pretty high simulation precision; 2) ceramic matrix can be easily broken and removed by fiber squeezing caused by grinding forces thus reducing the surface quality. To alleviate this damage, grinding directions should be selected as along with the fiber orientation which generates shear stress on fibers; 3) fiber debonds are caused by the inconsistent deformations of the warp and weft fiber bundles. Grinding across the axis of the wefts is a better choice to alleviate this damage.