The manufacture of BLAC motor requires the motor stator (electric steel plate) and the motor case (aluminum die casting material) maintain strong contact to support the resistance of rotating moments against the rotational moments of the rotor. If there is small reverse rotational moment, the motor stator rotates easily, and damages the motor. To prevent a strong reverse rotational moment, interference fit between the motor stator and the motor case manufactured through heat shrinkage is required. This study, considers the tolerances that may occur in the manufacturing process of assembling stator and case, the contact pressure range that can occur in the heat shrinkage and the moments that can be supported by the motor stator. These are verified through the finite element analysis. The result validates finite element analysis as compared with theoretical values.
In sheet metal forming numerical analysis, the strain hardening equation has a significant effect on calculation results, especially in the field of spring-back. This study introduces the Kim-Tuan strain hardening model. This model represents sheet material behavior over the entire strain hardening range. The proposed model is compared to other well known strain hardening models using a series of uniaxial tensile tests. These tests are performed to determine the stress-strain relationship for Al6016-T4, DP980, and CP Ti sheets. In addition, the Kim-Tuan model is used to integrate the CP Ti sheet strain hardening equation in ABAQUS analysis to predict spring-back amount in a bending test. These tests highlight the improved accuracy of the proposed equation in the numerical field. Bending tests to evaluate prediction accuracy are also performed and compared with numerical analysis results.
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General Blending Approach of Fundamental Cold Flow Models for an Almost Complete Cold Flow Model in Terms of Tensile Test Jong Bok Byun, Chang Woon Jee, Kwang Hee Lee, Man Soo Joun steel research international.2023;[Epub] CrossRef
Characterization of double strain-hardening behavior using a new flow of extremum curvature strain of Voce strain-hardening model JongBok Byun, ChangWoon Jee, IlDong Seo, ManSoo Joun Journal of Mechanical Science and Technology.2022; 36(8): 4115. CrossRef
Approximation Method for Stress–Strain Using Metamodel Parameter Updating Dong-Seok Shin, Euy-Sik Jeon, Young-Shin Kim Applied Sciences.2022; 12(6): 2868. CrossRef
A Review of Flow Characterization of Metallic Materials in the Cold Forming Temperature Range and Its Major Issues Man-Soo Joun, Mohd Kaswandee Razali, Chang-Woon Jee, Jong-Bok Byun, Min-Cheol Kim, Kwang-Min Kim Materials.2022; 15(8): 2751. CrossRef
Practical Blended Flow Models for Bulk Metal Forming Using the Cylindrical Tensile Test with Its Related Flow Behavior at Large Strain Chang Woon Jee, Su Min Ji, Jong Bok Byun, Man Soo Joun Journal of the Korean Society for Precision Engineering.2022; 39(8): 583. CrossRef
Inverse Approach of Parameter Optimization for Nonlinear Meta-Model Using Finite Element Simulation Seungpyo Hong, Dongseok Shin, Euysik Jeon Applied Sciences.2021; 11(24): 12026. CrossRef
Development of a Novel Plastic Hardening Model Based on Random Tree Growth Method Hyoung-Seo Son, Young-Gon Kim, Jin-Jae Kim, Young-Suk Kim Korean Journal of Metals and Materials.2020; 58(11): 741. CrossRef
Approximation of Non-Linear Stress–Strain Curve for GFRP Tensile Specimens by Inverse Method Dong Seok Shin, Young Shin Kim, Euy Sik Jeon Applied Sciences.2019; 9(17): 3474. CrossRef
Investigation of Springback Prediction for an Aluminum 7000 Sheet Subjected to Press Forming Quoc Tuan Pham, Jung Han Song, Joong Cheul Park, Young Suk Kim Applied Mechanics and Materials.2019; 889: 203. CrossRef
In this study, kinematic analysis of forward kinematic, inverse kinematic and jacobian for 6-bar parallel robot was analyzed. In order to analyze the maximum workspace of 6-bar parallel robot, maximum revolution range of active joint was calculated. Also, to analyze forward dynamics and inverse dynamics of 6-bar parallel robot, recurdyn and simmechanics was utilized. Using a PI controller and Feedforward controller make an experiment with square motion of end_effector. The reference value of active joint and trace of end_effector were compared with actual experimental value.
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