저자명 김진영 
년도 1997 
The coil spring plays an important role in absorbing the external forces and energy with deformation and releasing them after unloading. The coil spring in automobiles serves as a component to suspend the body of the automobiles. Since the coil spring requires to endure the several kinds of heavy loads without any damages during the all life-time, it is very important to obtain the exact deformation characteristics with stress distributions of the coil spring. The analysis of coil springs can be carried out with analytic solutions such as Wahl*s equations based on the fundamental elasticity theory and numerical solutions by finite element method using continuum elements or beam elements. In this study, computerized multi-level substructuring methods were developed and applied to analysis of springs. The purpose of substructuring methods is to reduce capacity of computer memory and computational time by multiple level reduction of the degrees of freedom of large size problems which are modeled by continuum elements. The finite element program developed is applied to some simple problems of tension, torsion, and bending of a bar with rectangular or circular cross section. The purpose of examples is to verify the accuracy and efficiency of the multi-level substructuring method schemes. The applications to the coil spring analysis demonstrate the validity of the multi-level substructuring method and the efficiency in computing time and memory.

번호 제목 저자명 날짜 조회 수
49 Structural Design and Evaluation for Improvement of the Roof Strength of a Three-Wheel Vehicle(삼륜차의 루프 강도 향상을 위한 구조 설계 및 평가) file Jesung Yoo  2017.06.07 1523
48 Elasto-plastic finite element method with directional reduced integration in sheet metal forming( 선향적 저감 적분을 이용한 탄소성 유한 요소법에 의한 박판성형해석 ) 한수식  2005.11.29 3743
47 Numerical simulation of bead formation by an elasto-plastic finite element method (탄소성 유한요소법을 이용한 비드 성형의 수치해석) 천병관  2005.11.29 3749
46 Effective experimental method for identification of the forming limit diagram of sheet metals (금속 박판의 성형한계도를 구하기 위한 실험방법 개선에 관한 연구) 정제웅  2005.11.29 4005
45 Finite element simulation of superplastic sheet forming with initial non-uniform thickness distribution (초기 두께분포가 있는 초소성 재료의 유한요소 성형해석) 최영준  2005.11.29 4087
44 Self contact analysis of rubber-boots for C. V. joints by a 3-D finite element method (3차원 유한요소법을 이용한 등속조인트 고무 부트의 자체접촉해석) 이형욱  2005.11.29 4325
43 Three-dimensional Finite Element Analysis of Air Springs with Fiber-reinforced Rubber Composites (섬유강화 고무복합재 공기스프링의 3차원 유한요소 해석) 신진원  2005.11.29 4374
42 Numerical simulations of sheet forming processes by an elasto-plastic finite element method (탄소성 유한요소법을 이용한 박판 성형 공정 해석) [1] 최태훈  2005.11.29 4385
41 Plastic collapse analysis of hollow pipe structures by finite element limit analysis (유한요소 극한해석을 이용한 중공 파이프 구조물의 소성 붕괴 거동 해석 ) 서종관  2005.11.29 4390
40 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 4431
39 Design of process parameters in axisymmetric multi-step deep drawing by a finite element inverse method (유한요소 역 해석을 이용한 축대칭 다단계 박판성형에서의 공정변수 설계에 관한 연구) 조천수  2005.11.29 4456
38 Experiment and Finite Element Analysis of the Formation of Adiabatic Shear Band in Sheet Metal (박판금속의 단열전단밴드 생성에 대한 실험 및 유한요소 해석) 임지호  2005.11.29 4516
37 Tension Test and Specimen Design with the Finite Element Method at Intermediate Strain Rates(준고속 변형률 속도에서의 인장실험 및 유한요소법을 이용한 박판 인장시편의 형상결정) 송정한  2005.11.29 4648
36 Adaptive Time-stepping Procedure for Dynamic Limit Analysis (동적 극한해석을 위한 적응적 시간간격기법) 이종섭  2005.11.29 4652
35 Tension/Compression Hardening Behavior of Auto-body Steel Sheets at Intermediate Strain Rates Ranging from 0.1/s to 50/s(중 변형률속도 0.1/s ~ 50/s 영역에서의 차체 강판의 인장/압축 경화 거동에 관한 연구) 주근수  2014.01.16 4678
34 Preform Design for Net Shape Sinter-forging of Powdered Magnets with Curved Shape (곡면 형상을 가지는 분말 자석의 정형 가공을 위한 예비성형체의 설계) 김승호  2005.11.29 4688
33 Efficiency enhancement of sheet metal forming analysis with a mesh regularization method (격자 정방형화 방법을 이용한 박판 성형해석의 효율개선) 윤종헌  2005.11.29 4785
32 Validation of Dynamic Hardening Models at High Strain Rates Using Taylor Impact Tests (테일러 충격시험을 이용한 고 변형률속도 조건에서의 동적 경화모델 검증) 박명준  2013.09.02 5137
31 Electrothermal analysis of large electric current systems by finite element method (유한요소법을 이용한 대전류 시스템의 전열해석 ) 강우종  2005.11.29 5268
30 Study on the characterization of the dynamic material properties of sheet metal for auto-body considering the pre-strain effect(예비변형률 효과를 고려한 차체용 박판의 동적 물성 특성 연구) 김석봉  2005.11.29 5282