https://sci-en-tech.com/IJNI/index.php/MS/issue/feedInternational Journal of Mechanical Systems (No more publication since 2019)2018-05-31T03:31:54+00:00Joanne Wangscientechpublisher@gmail.comOpen Journal Systems<p><strong>Aims & Scope</strong></p> <p>The purpose of this journal is to provide a forum for the fast online publication and dissemination of original novel ideas, methodology and practical techniques in mechanical systems. The ideas, methods and technique should be innovative and of high scientific and potentially practical value in creating new mechanical systems or solving problems related to mechanical systems.</p> <p>The journal is devoted to the following topics.</p> <ul> <li class="show">Design of mechanical systems;</li> <li class="show">Analysis of mechanical systems;</li> <li class="show">Modeling and simulation of mechanical systems;</li> <li class="show">Manufacturing techniques for mechanical systems;</li> <li class="show">Operation research for mechanical systems;</li> <li class="show">Management technology for mechanical systems;</li> <li class="show">System engineering;</li> <li class="show">Materials for mechanical systems;</li> <li class="show">Mechanical systems for energy conservation and storage;</li> <li class="show">Mechanical systems for energy harvesting and recycling;</li> <li class="show">Bio-inspired mechanical systems;</li> <li class="show">Others related to mechanical systems.</li> </ul> <p>The journal places a great emphasis on novelty of the ideas, methods, and techniques. It opens to all age groups and all walks of life, aiming for fresh and interdisciplinary ideas for mechanical systems.</p>https://sci-en-tech.com/IJNI/index.php/MS/article/view/Volume%202%20%28May%202018%29 Analytical and Experimental Investigation on Crack Generated in Diameter - Enlargement Section2018-05-31T03:31:54+00:00Xia Zhuzhu.xia.mx@ehime-u.ac.jpNagatoshi Okabeokabe.nagatoshi.mz@ehime-u.ac.jpKeiji Ogiogi.keiji.mu@ehime-u.ac.jpHiromichi Toyotatoyota.hiromichi.mb@ehime-u.ac.jp<p>This paper clarifies analytically and experimentally reasons why an original cold plastic working causes a crack to generate in the root of a stepped section. The new cold working method has been proposed for enlarging the diameter of a short section of a metal shaft using a combination of a cyclic bending load and an axial compressive load that is almost the same as the yield stress of the sample material. The method features large plastic deformation easily progresses in the processed section under a low axial compressive load at room temperature. However, we face a big problem that a crack sometimes generates in the stepped section during the processing. In this study, first, processing experiments were carried out to investigate that where and when the crack started and progressed and uncover influence of processing conditions on the crack. Next, simulation analyses were conducted by finite element method to calculate behaviors of stress and strain during processing. Finally, it was identified based on experiments and analyses that fatigue damage caused a fatigue crack to start and progress depended on processing conditions, and the fatigue strength was predicted successfully by the Coffin-Manson' law.</p>2018-05-31T02:37:10+00:00##submission.copyrightStatement##