저자명 정세환 
년도 2006 
The fiber reinforced rubber composite has been attracted interests such as high specific modulus, high specific strength, efficient damping and thermal characteristics. Finite element analyses of the structures made of the fiber reinforced composite require adequate method to characterize the highly anisotropic behavior due to the one or several embedded layers of fiber cords with different spatial orientation. Currently, most numerical analyses of the fiber reinforced composites are based on the theories and techniques originally developed for laminated fiber composites, with several arbitrarily oriented cord layers and the matrix material being represented within one single finite element. The material properties are averaged over an element in the basis of an anisotropic material law. The alternative approach is the use of rebar element. This model is characterized by defining the overlay rebar element, which separately represents in conjunction with corresponding rubber element.
In this paper, the continuum based rebar element is newly proposed by considering the orientation of the fiber during the deformation of the composite. At first, numerical simulation is carried out in order to evaluate the generally used modeling schemes such as the Haplin-Tsai equation and the rebar element in ABAQUS/Standard. The analysis result shows the large difference in both schemes compared with the experimental one since the orientation of the fiber that causes the change of mechanical property of composites during the deformation is not considered in both scheme. For the improvement of analysis accuracy, the mechanical behavior of the embedded fiber is modeled using two node bar elements that enable the description of the relative deformation and spatial orientation of the embedded fiber. Three-dimensional finite element program is constructed based on the total Lagrangian formulation considering both the geometric nonlinearity and material nonlinearity. The finite element analysis of tensile test is carried and the simulation results are compared with experimental one in order to evaluate the validity of suggested scheme. The proposed method provides a realistic representation of fiber reinforced rubber composite compared with other modeling schemes such as the Haplin-Tsai equation and the rebar element in ABAQUS/Standard. The suggested scheme is then applied to the 3-D finite element analysis of the inflation process of an air-spring. Good agreement between analysis prediction and experimental result has been obtained and it demonstrates that suggested scheme is available to utilize in the finite element analysis of the structure made of the fiber reinforced composites.

번호 제목 저자명 날짜 조회 수
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47 Tensile Properties of Nugget Region in a Spot Weld at Various Strain-Rates (점용접 너겟부의 변형률속도에 따른 인장 물성에 관한 연구) 박문수  2014.01.16 3065
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45 Tensile Material Properties of Carbon/epoxy Composite Laminates at High Strain Rates (탄소섬유강화 복합재료의 변형률 속도에 따른 인장물성의 평가) 최재영  2013.02.12 6139
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42 Study on the Dynamic Failure Model of Structural Adhesive Joints under Combined Loading Conditions(차량 구조용 접착제를 이용한 접합부의 복합하중조건에서 동적 파단 특성 연구) 임승찬  2013.01.24 4777
41 Study on the Strain-Rate Dependent Tensile Properties of Micro-Scale Aluminum Specimens(알루미늄 마이크로시편의 변형률속도에 따른 인장 특성 연구) 권준범  2012.03.01 7074
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35 Upper Bound Analysis of Dynamic Buckling Phenomenon of Circular Tubes Considering Strain Rate Effect (변형률 속도를 고려한 원형 튜브의 동적 좌굴 현상의 상계 해석에 관한 연구) 박충희  2008.08.02 6155
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33 Dynamic Material Properties of the Heat-Affected Zone (HAZ) in a Resistance Spot Weld(점용접 열영향부의 동적 물성특성에 관한 연구) 하지웅  2008.01.25 6931
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31 Finite Element Inverse Analysis of the Sheet Metal Forming Process Considering Bending History (굽힘 이력을 고려한 박판성형공정의 유한요소 역해석) 허지향  2008.01.25 5253
» Study on the 3-D finite element modeling of fiber reinforced rubber composite using the rebar element (리바요소를 이용한 섬유강화 고무기저 복합재료의 3차원 유한요소 모델링기법 연구) 정세환  2006.08.18 5917