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Fatigue Modeling/Testing & CAE Durability Analysis, 2017
Viewing 1 to 30 of 30
Vibration Fatigue for Chassis-Mounted, Cantilevered Components
Author(s): Song, G., Peters, J., Hopson, S., and Jordan, A.
Abstract Vehicle chassis mounted cantilevered components should meet two critical design targets: 1) NVH criterion to avoid resonance with road noise and engine vibration and 2) satisfied durability p....
Crack Failure Mode Analysis for Cam-Housing Rocker Arm and Pin
Author(s): Song, G.
Abstract During the extensive testing under NATO and Commercial Standards, crack is observed in camshaft housing to initiate from the eccentric shaft bore and go toward the hold down bolt hole. Hence ....
Fatigue Life Prediction of Induction Hardened Case Depth Specimens Made From 38MnVS6 Micro Alloyed Steel
Author(s): Lomate, D., Tewari, A., Date, P., Ukhande, M. et al.
Abstract The application of induction hardening treatment plays a vital role for enhancing fatigue life of various automotive components. This will incorporate compressive residual stresses in the com....
Fatigue Assessment with Special Respect to Size Effects and Material Behavior within Local Strain-Based Approaches
Author(s): Hell, M., Wagener, R., Kaufmann, H., and Melz, T.
Abstract In vehicle design and engineering, the fatigue of materials is a size-dependent phenomenon, which occurs in every safety-relevant component. An inaccurate fatigue assessment, neglecting relev....
Frequency FE-Based Weld Fatigue Life Prediction of Dynamic Systems
Author(s): Costa, E., Bishop, N., and Cardoso, V.
Abstract In most aspects of mechanical design related to a motor vehicle there are two ways to treat dynamic fatigue problems. These are the time domain and the frequency domain approaches. Time domai....
Development of Probabilistic Fatigue Life Distribution Functions with Lower and Upper Bounds
Author(s): Wei, Z., Nayaki, R., Mandapati, R., and Hamilton, J.
A probabilistic distribution function roughly consists of two parts: the middle part and the tails. The fatigue life distribution at a stress/load level is often described with two-parameter ....
Evaluation of the Influence of MnS in Forged Steel 38MnVS6 on Fatigue Life
Author(s): Scurria, M., Emre, S., Möller, B., Wagener, R. et al.
Abstract Manganese sulfides (MnS) are nonmetallic, ductile inclusions with high melting temperature (1610 °C) which improve the machinability and retard the grain growth in steels, in addition of cont....
Consideration of Temperature Effects in Thermal-Fatigue Performance Assessment of Components with Stress Raisers
Author(s): Wei, Z., Luo, L., Voltenburg, R., Seitz, M. et al.
Durability and reliability assessment of stress raisers is difficult in testing because the true deformation at a stress raiser often cannot be directly measured. Many approximate engineering....
Failure Modeling of Adhesive Bonded Joints with Cohesive Elements
Author(s): Chen, G. and Guo, M.
Abstract Advanced high strength steels (AHSS) have been extensively used in the automotive industry for vehicle weight reduction. Although AHSS show better parent metal fatigue performance, the influe....
Lifetime Assessment of Cylinder Heads for Efficient Heavy Duty Engines Part I: A Discussion on Thermomechanical and High-Cycle Fatigue as Well as Thermophysical Properties of Lamellar Graphite Cast Iron GJL250 and Vermicular Graphite Cast Iron GJV450
Author(s): Seifert, T., von Hartrott, P., Boss, K., and Wynthein, P.
Abstract Cast iron materials are used as materials for cylinder heads for heavy duty internal combustion engines. These components must withstand severe cyclic mechanical and thermal loads throughout ....
Methodology to Study the Effect of Variation of Suspension Characteristics on Body Durability
Author(s): Shankar, M., Sri Harsha, I., Sunil, K., and Ramachandran, R.
Abstract In an automobile, road loads due to tire-road interaction are transferred to vehicle body through suspension. This makes suspension a critical component from the body durability perspective. ....
The Significance to Establish a Durability Model for an Automotive Ride
Author(s): Kong, Y., Schramm, D., Omar, M., Mohd. Haris, S. et al.
This paper presents the study of a relationship between objective vertical vibration and coil spring fatigue life under different road excitation to shorten suspension design process. Current....
Lifetime Assessment of Cylinder Heads for Efficient Heavy Duty Engines Part II: Component-Level Application of Advanced Models for Thermomechanical Fatigue Life Prediction of Lamellar Graphite Cast Iron GJL250 and Vermicular Graphite Cast Iron GJV450 Cylinder Heads
Author(s): Hazime, R., Seifert, T., Kessens, J., and Ju, F.
Abstract A complete thermomechanical fatigue (TMF) life prediction methodology is developed for predicting the TMF life of cast iron cylinder heads for efficient heavy duty internal combustion engines....
Influence of Hardness Variation and Defects on Fatigue Behavior of Automotive Steels
Author(s): Cha, S., Hong, S., and Sharifimehr, S.
Abstract Fatigue behavior of two types of automotive steel, quenched and tempered SUJ2 and carburized SCM820PRH, which are applied as powertrain parts are studied. These two types of steel are differe....
Fatigue Assessment of Nodular Cast Iron with Material Imperfections
Author(s): Bleicher, C., wagener, R., Kaufmann, H., and Melz, T.
Abstract For the design of thick-walled nodular cast iron components, fatigue assessment, especially in the context of local imperfections in the material, is a challenging task. Not only the cyclic m....
A Structural Stress Recovery Procedure for Fatigue Life Assessment of Welded Structures
Author(s): Wu, X., Wei, Z., Kang, H., and Khosrovaneh, A.
Abstract Over the decades, several attempts have been made to develop new fatigue analysis methods for welded joints since most of the incidents in automotive structures are joints related. Therefore,....
Cyclic Material Behavior of High-Strength Steels Used in the Fatigue Assessment of Welded Crane Structures with a Special Focus on Transient Material Effects
Author(s): Möller, B., Tomasella, A., Wagener, R., and Melz, T.
Abstract The cyclic material behavior is investigated, by strain-controlled testing, of 8 mm thick sheet metal specimens and butt joints, manufactured by manual gas metal arc welding (GMAW). The mater....
A Finite Element Method for Camshaft Cap Durability Analysis
Author(s): Mortazavian, S., Moraveji, J., Adimi, R., and Chen, X.
Abstract In this study, a finite element analysis method is developed for simulating a camshaft cap punching bench test. Stiffness results of simulated camshaft cap component are correlated with test ....
Fatigue Life Prediction of Injection Molding Tool
Author(s): Lu, L., Zhou, J., Iyer, R., Webb, J. et al.
Abstract Injection molding tools are expensive and the fatigue failure during production would result in very costly rework on the tool and downtime. Currently, mold designs are mostly based on expert....
Simultaneous Durability Assessment and Relative Random Analysis Under Base Shake Loading Conditions
Author(s): Datta, S., Bishop, N., Sweitzer, K., and Atkins, A.
Abstract For many automotive systems it is required to calculate both the durability performance of the part and to rule out the possibility of collision of individual components during severe base sh....
Application of Weld Fatigue Evaluation Procedure for Considering Multi-Axial Stress States Using the Battelle Structural Stress Method
Author(s): Hong, J. and Cox, A.
Abstract Even under uniaxial loading, seemingly simple welded joint types can develop multi-axial stress states, which must be considered when evaluating both the fatigue strength and failure location....
Effect of Engine Motion on the Fatigue Life of Cooling Components
Author(s): Nadella, K. and Zhang, Y.
Abstract Ensuring durability is one of the key requirements while developing cooling modules for various powertrains. Typically, road surface induced loads are the main driving force behind mechanical....
Analysis on Fatigue Load and Life about the Frame of a Low-Speed Electric Vehicle Based on Multi-Body Dynamics
Author(s): Duan, Y., Huang, W., Gao, Y., and Han, J.
Abstract The frame of a low-speed electric vehicle was treated as the research object in the paper. The fatigue load of the frame was analyzed with multi-body dynamics method and the fatigue life of f....
Improving the Accuracy of Dynamic Vibration Fatigue Simulation
Author(s): Munson, K., Kihm, F., and Halfpenny, A.
Abstract Finite Element Analysis (FEA)-based structural simulations are typically used to assess the durability of automotive components. Many parts experience vibration in use, and resonance effects ....
Frequency Effects on High-Density Polyethylene Failure under Cyclic Loading
Author(s): Qi, Z., Lu, L., Doan, L., Thota, B. et al.
Abstract High density polyethylene (HDPE) is widely used in automotive industry applications. When a specimen made of HDPE tested under cyclic loading, the inelastic deformation causes heat generated ....
Experimental Study of Mixed Mode Fatigue Crack Growth of Automotive Structural Adhesive BM4601
Author(s): Chen, Q., Guo, H., Avery, K., Su, X. et al.
Abstract Fatigue crack growth tests have been carried out to investigate the mixed mode fatigue crack propagation behavior of an automotive structural adhesive BM4601. The tests were conducted on a co....
Deriving a Continuous Fatigue Life Curve from LCF to VHCF
Author(s): Wagener, R. and Melz, T.
Abstract Fatigue testing is known to be time consuming and expensive. Therefore, it should be the main target of fatigue research to accelerate the derivation of fatigue properties. Depending on the r....
A Computational Multiaxial Model for Stress-Strain Analysis of Ground Vehicle Notched Components
Author(s): Ince, A.
Abstract Driveline and suspension notched components of off-road ground vehicles often experience multiaxial fatigue failures along notch locations. Large nominal load histories may induce local elast....
The Study on Fatigue Test of Cab Assembly Based on 4-Channel Road Simulation Bench
Author(s): Gao, Y., Wang, G., and Han, J.
Abstract The multi-body dynamics simulation and physical iteration were carried out based on the 4-channel road simulation bench, the solution of fatigue test bench which was suitable for cab with fra....
Fatigue Analysis of Continuously Carbon Fiber Reinforced Laminates
Author(s): Gaier, C., Fischmeister, S., Maier, J., and Pinter, G.
Abstract Lightweight constructions and the reduction of production time and costs is of increasingly importance. Therefore, engineers make a lot of effort to replace metallic parts by other materials.....
Viewing 1 to 30 of 30