{"id":5819,"date":"2024-07-15T08:49:03","date_gmt":"2024-07-15T08:49:03","guid":{"rendered":"https:\/\/ikv-aachen.de\/student-research-theses\/simulation-of-micromechanical-stresses-in-fiber-reinforced-thermoplastics\/"},"modified":"2025-01-21T08:56:44","modified_gmt":"2025-01-21T08:56:44","slug":"simulation-of-micromechanical-stresses-in-fiber-reinforced-thermoplastics","status":"publish","type":"cpt_ikv_srt","link":"https:\/\/ikv-aachen.de\/en\/student-research-theses\/simulation-of-micromechanical-stresses-in-fiber-reinforced-thermoplastics\/","title":{"rendered":"Simulation of micromechanical stresses in fiber-reinforced thermoplastics"},"content":{"rendered":"<style type=\"text\/css\">\n    #single-header-block_7e1cc4f3160d96ed8ce4d054576f3c5d .swiperThumbsNavi .swiper-slide {\n        opacity: 0.4;\n    }\n\n    #single-header-block_7e1cc4f3160d96ed8ce4d054576f3c5d .swiperThumbsNavi .swiper-slide-thumb-active {\n        opacity: 1;\n    }\n<\/style>\n    <section id=\"single-header-block_7e1cc4f3160d96ed8ce4d054576f3c5d\" class=\"block-single-header theGridWrapper \">\n        <div class=\"theGrid12\">\n            <div class=\" col-start-2 col-span-10 md:col-start-3  md:col-span-8\">\n                <h2 class=\"font-serif font-semibold text-blue text-sm w-4\/5\">\n                    Bachelor&#8217;s thesis or Master&#8217;s thesis                <\/h2>\n                                                    <div class=\"skewToMiddle\">\n                        <div class=\"relative  text-blue text-sm font after:border-2  after:border-blue rounded-xl bg-green-lighter  p-base -rotate-6 my-xl  after:block after:absolute after:w-full after:h-full after: after:-z-10 after:rounded-xl after:rotate-1  after:box-content  after:-top-2xs after:-left-2xs after:bg-blend-multiply  leading-snug \">\n                            <div class=\"skewToMiddleInner\">\n                                The aim of the thesis is to develop a unit cell model for the FE analysis of micromechanical stresses during fatigue in a short-fibre reinforced thermoplastics.                            <\/div>\n                        <\/div>\n                    <\/div>\n                            <\/div>\n        <\/div>\n    <\/section>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Topic of the work:<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Short-fiber-reinforced thermoplastics (SFT) are predominantly processed using the injection moulding process, as this method enables the economical, high-quality and automatic production of components. Due to the flow conditions within the melt, the short fibers align themselves within the molten polymer matrix, resulting in an anisotropy of the mechanical properties. Only macroscopic parameters such as the direction-dependent stiffness can be determined experimentally. However, in order to investigate the microscopic damage processes during fatigue, it is necessary to determine the micromechanical stress between fiber and matrix as a function of the local fiber orientation. For this purpose, the material is modeled using the finite element method with a unit cell model. With a thesis at IKV you have the opportunity to acquire comprehensive knowledge in the field of simulation of anisotropic materials and thus learn industry-relevant skills.<\/p>\n\n\n<figure class=\" relative flex flex-col gap-2xs mb-xs md:mb-l xl:mb-xl\"><img decoding=\"async\"  class=\" w-full  \"  src=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2024\/07\/Stuwi-Simulation-mikro-Beanspruchung.png\" srcset=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2024\/07\/Stuwi-Simulation-mikro-Beanspruchung.png 1142w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2024\/07\/Stuwi-Simulation-mikro-Beanspruchung-748x155.png 748w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2024\/07\/Stuwi-Simulation-mikro-Beanspruchung-768x159.png 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" width=\"1142\" height=\"237\" alt=\"Stuwi Simulation mikro Beanspruchung eng\" loading=\"lazy\" \/><span class=\" text-copyright order-3 justify-end text-right w-full  w-full \">&copy; IKV<\/span><figcaption class=\" w-full  text-figcaption justify-end text-right \">By analyzing the damage mechanisms in dependence on fibre orientation, it is possible to improve the fatigue prediction of short-fibre reinforced components. The analysis using micromechanical models offers the opportunity to investigate the damage mechanisms independently of the material morphology.<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\"><strong>The work is related to this research project:<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The fatigue mechanisms in short-fiber-reinforced plastics are not yet fully understood. This is mainly due to the anisotropic layer structure, which induces a complex stress state in the component due to layer interactions. A macroscopic characterisation of the meso level thus becomes impossible. For this reason, an injection moulding tool was developed at IKV that generates sheet geometries with unidirectional short-fiber reinforcement. This makes it possible for the first time to characterize the degradation of mechanical properties during fatigue in the meso plane as a function of fiber orientation. As part of the working group, you will contribute to research into material fatigue and thus support IKV in increasing the sustainability and operational safety of technical thermoplastics.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Objective:<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The aim of your work will be to use unit cell models to simulate and evaluate the development of the stress and damage state at the micro level. For this purpose, the components of the stress state of the matrix phase are analysed at the micro level. The aim is to improve the understanding of materials during dynamic cyclic fatigue. Sensitivity analyses are also used to determine the influences of the model parameters and characteristics. You will document your methodology and the knowledge you have gained in a Bachelor&#8217;s or Master&#8217;s thesis.<\/p>\n\n\n<style type=\"text\/css\">#table-from-csv-block_10aae312aace3bfd4bcfbf58b82883f0 table:not(thead) td:before { content: attr(data-col-name); }\n<\/style><section id=\"table-from-csv-block_10aae312aace3bfd4bcfbf58b82883f0\" class=\"block-table-from-csv theGridWrapper  text-sm   \">\n\n<table class='w-full gap-xs hyphens-none text-wrap '>\n\n<thead class='font-semibold font-serif hidden text-blue  lg:table-row-group'>\n\t<tr class=' flex flex-col mt-xs lg:border-t border-dashed first:border-none lg:border-white lg:table-row tableToNormal   '>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name='For a Bachelor's thesis you will work on the following tasks' >For a Bachelor&#039;s thesis you will work on the following tasks<\/td>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name=' For a Master's thesis you will work on the following tasks' > For a Master&#039;s thesis you will work on the following tasks<\/td>\n<\/tr>\n<\/thead><tbody>\n\t<tr class=' flex flex-col mt-xs lg:border-t border-dashed first:border-none lg:border-white lg:table-row tableToNormal     odd:bg-green-lighter even:bg-green-lightest py-xs '>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name='For a Bachelor's thesis you will work on the following tasks' >Familiarisation with and literature research on the FEM software Abaqus and the existing unit cell models<\/td>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name=' For a Master's thesis you will work on the following tasks' >Familiarisation with and literature research on the FEM software Abaqus and the existing unit cell models<\/td>\n\t<\/tr>\n\t<tr class=' flex flex-col mt-xs lg:border-t border-dashed first:border-none lg:border-white lg:table-row tableToNormal     odd:bg-green-lighter even:bg-green-lightest py-xs '>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name='For a Bachelor's thesis you will work on the following tasks' >Implementation of a damage model<\/td>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name=' For a Master's thesis you will work on the following tasks' >Implementation of a damage model<\/td>\n\t<\/tr>\n\t<tr class=' flex flex-col mt-xs lg:border-t border-dashed first:border-none lg:border-white lg:table-row tableToNormal     odd:bg-green-lighter even:bg-green-lightest py-xs '>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name='For a Bachelor's thesis you will work on the following tasks' >Calibration of material behavior using experimental data<\/td>\n\t\t<td class='grid grid-cols-2 gap-xs lg:table-cell before:block lg:before:hidden first:pl-2xs last:pr-2xs   before:text-right before:font-semibold before:font-serif align-top  py-3xs ' data-col-name=' For a Master's thesis you will work on the following tasks' > evaluation of the development of micromechanical stress using principal component analysis<\/td>\n\t<\/tr>\n\n<\/tbody>\n<\/table>\n\n<\/section>\n\n\n<h2 class=\"wp-block-heading\"><strong>Your profile:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enrolled student of a STEM subject<\/li>\n\n\n\n<li>Independent and quality-conscious way of working<\/li>\n\n\n\n<li>Interest in programming and simulation<\/li>\n\n\n\n<li>Ideally initial experience with the finite element method<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Has this vacancy piqued your interest? Apply for a job!<br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The aim of the work is to develop a unit cell model for the FE calculation of micromechanical stresses during fatigue in a short fiber reinforced thermoplastic.<\/p>\n","protected":false},"featured_media":2304,"parent":0,"template":"","srtk":[807,808],"research_fields":[809,817],"esl":[685],"class_list":["post-5819","cpt_ikv_srt","type-cpt_ikv_srt","status-publish","has-post-thumbnail","hentry","srtk-bachelor-thesis","srtk-master-thesis","research_fields-fiber-reinforced-plastics","research_fields-materials-technology","esl-simulative"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Simulation of micromechanical stresses in fiber-reinforced thermoplastics | IKV-Aachen<\/title>\n<meta name=\"description\" content=\"The aim of the work is to develop a unit cell model for the FE calculation of micromechanical 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