Peridynamic Impact Fracture Analysis of Multilayered Glass with Nonlocal Ghost Interlayer Model

Youn Doh Ha; Tae Sick An

doi:10.7734/COSEIK.2018.31.6.373

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2018 Vol.31, Issue 6 Preview Page Next Page

Peridynamic Impact Fracture Analysis of Multilayered Glass with Nonlocal Ghost Interlayer Model 비국부 층간 결합 모델을 고려한 다중적층 유리의 페리다이나믹 충돌 파괴 해석

2018. pp. 373-380

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Abstract

We present the peridynamic dynamic fracture analysis to solve impact fracturing of multilayered glass impacted by a high-velocity object. In the most practical multilayered glass structures, main layers are glued by thin elastic masking films. Thus, it is difficult and expensive to construct the numerical model for such a multilayered structure. In this paper, we employ efficient numerical modeling of multilayered structures with a nonlocal ghost interlayer model in which ghost particles are distributed between main layers and they are interacting with each other in peridynamic way. We also consider a simple nonlocal contact condition in peridynamic frameworks to solve impact and penetration of the high-velocity impactor to the multilayered structure. Finally we can confirm the fracture capabilities of the method using a multilayered glass model in which 7 glass layers and a single elastic backing layer are affixed by polyvinyl butyral films.

Keywords

peridynamics

multilayered glass

nonlocal ghost interlayer model

impact fracturing

본 논문에서는 다중적층 유리의 고속 충돌체에 의한 충돌/침투 파괴 현상을 해석하기 위해 페리다이나믹 동적 해석 기법 을 적용한다. 대부분의 다중적층 유리 구조물들은 다수의 주요 유리층들이 상대적으로 매우 얇은 탄성 필름으로 접착되어서 만들어진다. 따라서 다중적층 구조물의 수치해석 모델을 구성하는 것은 까다롭고 비용이 많이 든다. 본 연구에서는 실제 절 점을 대신하여 가상의 절점들을 주요층들 사이에 위치시키고 상호작용시키는 비국부 가상 층간구조 모델링을 도입하여 보 다 효율적으로 다중적층 구조를 모델링하였다. 또한 고속 충돌체와의 충돌 및 침투 현상을 해석하기 위해 페리다이나믹 비 국부 접촉 모델이 고려되었다. 7개의 유리층과 하나의 탄성 백킹층이 폴리비닐부티랄 필름으로 부착된 다중적층 유리의 충 돌 파괴 해석을 통해 제안된 해석 모델의 손상 파괴 적용 가능성을 확인하였다.

키워드

페리다이나믹 해석법

다중적층 유리

비국부 가상 층간 결합 모델

충돌 파괴

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 31
No :6
Pages :373-380
Received Date : 2018-10-23
Revised Date : 2018-10-29
Accepted Date : 2018-10-30
DOI :https://doi.org/10.7734/COSEIK.2018.31.6.373

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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