Papers by Keyword: Stress Distribution

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Authors: Bin Zheng, Yong Qi Liu, Rui Xiang Liu, Jian Meng
Abstract: In this paper, with the ANSYS, stress distribution, safety factor and fatigue life cycle of high-pressure common rail diesel engine connecting rod were analyzed by using 3D finite element method. The results show that the position of maximum principal stress is transition location of small end and connecting rod shank at maximum compression condition. The value of stress is 253.98 MPa in dangerous position. Safety factor is 2.67. The position of maximum principal stress is medial surface of small end at maximum stretch condition. The value of stress is 87.199 MPa in dangerous position. The fatigue life cycle of connecting rod is 2.6812×108. Fatigue safety factor is 1.5264.
531
Authors: Bin Zheng, Yong Qi Liu, Rui Xiang Liu, Jian Meng
Abstract: In this paper, with the ANSYS, stress distribution and safety factor of marine diesel engine connecting rod were analyzed by using 3D finite element method. The results show that the position of maximum principal stress is transition location of small end and connecting rod shank at maximum stretch condition. The value of stress is 24.69 MPa in dangerous position. The position of maximum principal stress is transition location of small end and connecting rod shank at maximum stretch condition. The value of stress is 198.65 MPa in dangerous position. Safety factor is 2.51.
351
Authors: Bin Zheng, Yong Qi Liu, Rui Xiang Liu, Jian Meng
Abstract: In this paper, with the ANSYS, stress distribution and safety factor of crankshaft were analyzed by using 3D finite element method. The results show that the exposed destructive position is the transition circular bead location of the crank web and the crankpin. Maximum stress is 118 MPa. Safety factor is 2.72. Maximum deformation is 0.773 mm. Crankshaft satisfies the design requirement.
1654
Authors: Bin Zheng, Yong Qi Liu, Rui Xiang Liu, Jian Meng
Abstract: In this paper, with the ANSYS, stress distribution and safety factor of stationary power generation diesel engine connecting rod were analyzed by using 3D finite element method. The results show that the position of maximum principal stress is transition location of small end and connecting rod shank at maximum compression condition. The value of stress is 176 MPa in dangerous position. Maximum deformation is 0.0713mm. Safety factor is 1.86. The oil-hole of small end is the exposed destructive positions at maximum stretch condition. Maximum stress value is 67.7 MPa in dangerous position. Maximum deformation is 0.0145mm.
1992
Authors: Basirom Izzawati, Mohd Afendi, M. Afif, S. Nurhashima, R. Daud, N.A.M. Amin, M.S. Abdul Majid
Abstract: The butt joint is the most studied type of adhesive joints in the literature. However, the joint strength prediction of joints is still a controversial issue as it involves a lot of factors that are difficult to quantify such as the yielding of the adherend, the plasticity of the adhesive and the bondline thickness. The present work is concerned with the three dimensional (3D) finite element stress analysis of butt adhesively bonded dissimilar joint. The objective of the present study was to analyse the effect of bond thickness on mechanical strength of butt adhesively bonded dissimilar joint. Aluminum alloy and steel were selected and five thicknesses were studied for each adherend: 0.2, 0.4, 0.6, 0.8, and 1.0 mm respectively. In order to quantify the influence of bondline thickness, adherend and durability of the butt joint, the 3D finite element models of ANSYS used to obtain the stress distributions. Mechanical properties of adhesive were determined by tensile test and ANSYS analysis. A statistical analysis of simulation results shows that the butt joint strength becomes stronger while the bondline gets thinner and adhesive gets tougher.
355
Authors: Xian Shan Liu, Bi Hong Song
Abstract: It is well known that research on mechanical characteristics of the underground draft tube and corresponding stress distribution of the steel lining under complex conditions plays an important role on assessing the underground powerhouse and hydropower project safety. However, due to complex boundaries and load conditions of the draft tube, especially the concrete itself is so easy to crack, crush and become plastic that it is more difficult to determine its 3-Dimensional mechanical behavior of the underground draft tube. To better solve the above difficulties, 3-D FEM simulated model was built based on the universal software named Ansys to analyze the stress distribution of the draft tube structure and the steel lining. The calculation results showed that the hoop stress and radial stress of the tube were all satisfied with the standard requirement, and maximum stress of the steel lining also accorded with the strength requirement, which indicated that simulation model and the analysis method brought forward in the paper was applicable and practical, and also provided an effectie method for the underground structures design and steel arrangement of the draft tube.
876
Authors: Fa Rong Gao, Yun Yuan Gao, Xu Gang Xi
Abstract: A blood vessel model of pseudo-elastic constitutive relation in an absolute (vacuum) zero-stress state is employed, and analytical equations of the vessel wall in the three-dimensional stress state are obtained in this paper. The stress distributions in circumferential and axial directions with different blood pressure levels and material parameters are discussed. The results show that the initial stresses of the vessel wall will increase with increment of the blood pressure, the material parameters also affect the distributions of initial stress, in particular, the increase of axial material parameters, will significantly increase axial stress. These methods are importance in the investigation of the vascular dynamic problem, and conclusions are of use in prevention of the related vascular diseases.
53
Authors: Xiao Ling Zheng, Zhi Li, Min You, Shan Yu, Mei Rong Zhao
Abstract: The stress distributed in the mid-bondline of the joints made of aluminium alloy and an epoxy adhesive was determined with the ANSYS software. The results from the FEA showed that the values of the peak stresses of the all the stress components (including the longitudinal stress Sx, the peel stress Sy, the shear stress Sxy, the 1st principal stress S1 and the von Mises equivalent stress Seqv) distributed in the mid-bondline are changed a little as the notch distance L was increased while the notch depth d was not great than 0.6mm. But the evidently changes occurred when the notch depth d was great than 0.9 mm for the stress Sx, Sy and S1 distributed in both the mid-bondline and the interface of the lap zone. When taken the stress distributed in the middle part of the lap zone into account, the peak stress at the point in the mid-bondline corresponding to the edge of the notch decreased firstly and then increased again as the notch distance L was increased from 0 mm to 8 mm. The proper geometry of the notch in the specimen was chosen by finite element analysis.
417
Authors: Xiao Ling Zheng, Ming Song Zhang, Min You, Hai Zhou Yu, Zhi Li
Abstract: The normal stress distributed in the mid-bondline of the adhesively bonded joint under cleavage loading was investigated using the elastic finite element method (FEM) and the strain gauges method to reveal the real normal stresses distribution in the metal-to-metal joint while the load was increased. The results from the finite element analysis (FEA) showed that there is always a peak stress of the normal stress Sy in the mid-bondline occurred at a point close to the loading pin axis. When the load was increased from 0.5 kN to 3 kN, there was also a point located at about x = 16mm along the length of specimen where there is without any normal stress at all. The result of stress Sy from the FEA is nearly the same as that one obtained from the strain gauges method. It was also found that there was a evidently hardness change in the bonded zone of the adherend made from structural steel or pure copper, which can be used to explain the procedure of the joint and discuss the distribution model of the normal stress Sy in the joint under the cleavage loading.
949
Authors: Zahra Trad, Abdelwahed Barkaoui, Moez Chafra
Abstract: Knee malalignment is considered one of the key biomechanical factors that influence the progression of knee osteoarthritis. In this context, a three-dimensional Finite Element model of the knee joint is developed and used to investigate the effect of the frontal plane femoro-tibial angle as well as the body weight load on the stress distribution in the knee cartilage and menisci. Therefore, the knee joint model is obtained through CAD software. Bones, articular cartilage and menisci are considered linear, elastic and isotropic materials. Ligaments were modelled using connectors. Consequently, contact pressures and equivalent stress (von-Mises) are calculated in Abaqus software. This model was validated using experimental and numerical results obtained by other authors. Results of this work demonstrated that; compressive stress and contact pressure on the medial compartment of the knee joint were found to be larger compared to those in the lateral compartment when the femoro-tibial angle and the body weight load increased from 0° to 12° varus and 500 N to 1250 N, respectively, suggesting that these two parameters might be risk factors for developing medial compartment knee osteoarthritis.
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