scholarly journals Pengaruh Beban terhadap Prediksi Umur Fatik Rangka Meja Kerja Balai LAPAN Garut Menggunakan Ansys Workbench

2020 ◽  
Vol 4 (2) ◽  
pp. 57
Author(s):  
Lasinta Ari Nendra Wibawa ◽  
Kuncoro Diharjo
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Safety Factor ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Element Analysis ◽  
Stress Theory ◽  
Minimum Age ◽  
Minimum Safety Factor ◽  
Ansys Workbench

The study examines the effect of the load on fatigue life prediction of a workbench frame using the finite element method. The design of the workbench frame uses Autodesk Inventor Professional 2017, while finite element analysis uses Ansys Workbench. The workbench frame is subjected to loads 150, 175, 200, and 225 kg with a fully-reserved type of loading. Fatigue life prediction using Gerber's mean stress theory. The material of the workbench frame using Aluminum alloy 6061. The simulation results show that the workbench frame has a minimum fatigue life for loads of 150, 175, 200, and 225 kg, respectively 1 x 108, 6.61 x 107, 1.69 x 107, and 4.09 x 106 cycles. Whereas the minimum safety factor for fatigue life is 150, 175, 200, and 225 kg, respectively 1.395; 1,196; 1,046; and 0.930. It shows the workbench frame can withstand the fatigue life to a minimum of 107 cycles for a load of 150, 175, and 200 kg because it has a safety factor of more than 1. While for the 225 kg load, the workbench frame fails to reach a minimum age of 107 cycles due to fatigue life prediction is only 4.09 x 106 cycles with a safety factor of less than 1, which is 0.930.

TTK Chitra tilting disc heart valve model TC2: An assessment of fatigue life and durability

2017 ◽  
Vol 231 (8) ◽  
pp. 758-765 ◽  
Author(s):  
NN Subhash ◽  
Adathala Rajeev ◽  
Sreedharan Sujesh ◽  
CV Muraleedharan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Heart Valve ◽  
Life Prediction ◽  
Heart Valves ◽  
Failure Modes ◽  
Fatigue Life Prediction ◽  
Element Analysis ◽  
Valve Model

Average age group of heart valve replacement in India and most of the Third World countries is below 30 years. Hence, the valve for such patients need to be designed to have a service life of 50 years or more which corresponds to 2000 million cycles of operation. The purpose of this study was to assess the structural performance of the TTK Chitra tilting disc heart valve model TC2 and thereby address its durability. The TC2 model tilting disc heart valves were assessed to evaluate the risks connected with potential structural failure modes. To be more specific, the studies covered the finite element analysis–based fatigue life prediction and accelerated durability testing of the tilting disc heart valves for nine different valve sizes. First, finite element analysis–based fatigue life prediction showed that all nine valve sizes were in the infinite life region. Second, accelerated durability test showed that all nine valve sizes remained functional for 400 million cycles under experimental conditions. The study ensures the continued function of TC2 model tilting disc heart valves over duration in excess of 50 years. The results imply that the TC2 model valve designs are structurally safe, reliable and durable.

scholarly journals Design and finite element analysis of a fatigue life prediction for safe and economical machine shaft

2019 ◽  
Vol 8 (1) ◽  
pp. 105-111 ◽  
Author(s):  
Samuel O. Afolabi ◽  
Bankole I. Oladapo ◽  
Christianah O. Ijagbemi ◽  
Adeyinka O.M. Adeoye ◽  
Joseph F. Kayode
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Element Analysis

scholarly journals Research on the Fatigue Life Prediction Method of Thrust Rod

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Guoyu Feng ◽  
Wenku Shi ◽  
Henghai Zhang ◽  
Qinghua Zu ◽  
Teng Teng ◽  
...  
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Fatigue Damage ◽  
Life Prediction ◽  
Damage Mechanics ◽  
Equivalent Stress ◽  
Prediction Method ◽  
Fatigue Life Prediction ◽  
Model Parameters ◽  
Element Analysis

Purpose of this paper is to investigate the fatigue life prediction method of the thrust rod based on the continuum damage mechanics. The equivalent stress used as damage parameters established rubber fatigue life prediction model. Through the finite element simulation and material test, the model parameters and the fatigue damage dangerous positions were obtained. By equivalent stress life model, uniaxial fatigue life of the V-type thrust rod is analyzed to predict the ratio of life and the life of the test was 1.73, within an acceptable range, and the fatigue damage occurring position and finite element analysis are basically the same. Fatigue life analysis shows that the method is of correct, theoretical, and practical value.

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