基于多轴疲劳准则的PMMA膝垫疲劳寿命预测

D. Carnelli, T. Villa, D. Gastaldi, G. Pennati
{"title":"基于多轴疲劳准则的PMMA膝垫疲劳寿命预测","authors":"D. Carnelli, T. Villa, D. Gastaldi, G. Pennati","doi":"10.1177/228080001100900301","DOIUrl":null,"url":null,"abstract":"Purpose. Experimental tests have played a major role in the assessment of fatigue endurance of orthopedic prostheses; however, cyclic tests on devices entail high costs. Here, a multiaxial fatigue criterion coupled with computational simulations and material properties measurements has been employed to predict fatigue life of the tibial component of a polymeric PMMA spacer. The ultimate aim is to obtain valid information on fatigue behavior avoiding fatigue tests on the device. Methods. First, an accurate measurement of the static and fatigue properties of PMMA samples is performed. Then, numeric simulations of the fatigue behavior of the PMMA spacer reproducing the experimental test conditions according to ISO 14879-1 were carried out in order to calculate the stress field throughout the device. Finally, a Risk Index was calculated by using a proper multiaxial fatigue criterion for brittle materials (Kakuno-Kawada) for the assessment of the device fatigue behavior by predicting the F-N curves. Results. The numeric results were validated by comparing the predictions against experimental data already published by our group. The multiaxial fatigue criterion was able to predict the most critical point on the spacer upper surface and the fatigue behavior of the device that nicely matched the experimental curves. Conclusions. This approach represents a valuable tool to investigate the mechanical reliability of implantable devices; nevertheless, the use of advanced and specific failure criteria coupled with accurate data of the device’s material is mandatory to represent a real alternative to the experimental approach in fatigue life prediction.","PeriodicalId":51074,"journal":{"name":"Journal of Applied Biomaterials & Biomechanics","volume":"9 1","pages":"185 - 192"},"PeriodicalIF":0.0000,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Predicting Fatigue Life of a PMMA Based Knee Spacer Using a Multiaxial Fatigue Criterion\",\"authors\":\"D. Carnelli, T. Villa, D. Gastaldi, G. Pennati\",\"doi\":\"10.1177/228080001100900301\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Purpose. Experimental tests have played a major role in the assessment of fatigue endurance of orthopedic prostheses; however, cyclic tests on devices entail high costs. Here, a multiaxial fatigue criterion coupled with computational simulations and material properties measurements has been employed to predict fatigue life of the tibial component of a polymeric PMMA spacer. The ultimate aim is to obtain valid information on fatigue behavior avoiding fatigue tests on the device. Methods. First, an accurate measurement of the static and fatigue properties of PMMA samples is performed. Then, numeric simulations of the fatigue behavior of the PMMA spacer reproducing the experimental test conditions according to ISO 14879-1 were carried out in order to calculate the stress field throughout the device. Finally, a Risk Index was calculated by using a proper multiaxial fatigue criterion for brittle materials (Kakuno-Kawada) for the assessment of the device fatigue behavior by predicting the F-N curves. Results. The numeric results were validated by comparing the predictions against experimental data already published by our group. The multiaxial fatigue criterion was able to predict the most critical point on the spacer upper surface and the fatigue behavior of the device that nicely matched the experimental curves. Conclusions. This approach represents a valuable tool to investigate the mechanical reliability of implantable devices; nevertheless, the use of advanced and specific failure criteria coupled with accurate data of the device’s material is mandatory to represent a real alternative to the experimental approach in fatigue life prediction.\",\"PeriodicalId\":51074,\"journal\":{\"name\":\"Journal of Applied Biomaterials & Biomechanics\",\"volume\":\"9 1\",\"pages\":\"185 - 192\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2011-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Applied Biomaterials & Biomechanics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1177/228080001100900301\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Biomaterials & Biomechanics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/228080001100900301","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

摘要

目的。实验测试在评估骨科假体的疲劳耐力方面发挥了重要作用;然而,在设备上进行循环测试需要很高的成本。本文采用多轴疲劳准则,结合计算模拟和材料性能测量,预测了聚合物PMMA垫片胫骨组件的疲劳寿命。最终目的是获得有关疲劳行为的有效信息,避免对设备进行疲劳试验。方法。首先,对PMMA样品的静态和疲劳性能进行了精确的测量。然后,根据ISO 14879-1的试验条件,对PMMA间隔片的疲劳行为进行了数值模拟,以计算整个装置的应力场。最后,采用适用于脆性材料的多轴疲劳准则(Kakuno-Kawada),通过预测F-N曲线,计算出设备疲劳行为的风险指数。结果。通过将预测结果与本小组已发表的实验数据进行比较,验证了数值结果。该多轴疲劳准则能较好地预测隔片上表面的最临界点和装置的疲劳行为,与实验曲线吻合较好。结论。这种方法是研究植入式装置机械可靠性的一种有价值的工具;然而,在疲劳寿命预测中,必须使用先进和特定的失效标准,并结合设备材料的准确数据,才能真正替代实验方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Predicting Fatigue Life of a PMMA Based Knee Spacer Using a Multiaxial Fatigue Criterion
Purpose. Experimental tests have played a major role in the assessment of fatigue endurance of orthopedic prostheses; however, cyclic tests on devices entail high costs. Here, a multiaxial fatigue criterion coupled with computational simulations and material properties measurements has been employed to predict fatigue life of the tibial component of a polymeric PMMA spacer. The ultimate aim is to obtain valid information on fatigue behavior avoiding fatigue tests on the device. Methods. First, an accurate measurement of the static and fatigue properties of PMMA samples is performed. Then, numeric simulations of the fatigue behavior of the PMMA spacer reproducing the experimental test conditions according to ISO 14879-1 were carried out in order to calculate the stress field throughout the device. Finally, a Risk Index was calculated by using a proper multiaxial fatigue criterion for brittle materials (Kakuno-Kawada) for the assessment of the device fatigue behavior by predicting the F-N curves. Results. The numeric results were validated by comparing the predictions against experimental data already published by our group. The multiaxial fatigue criterion was able to predict the most critical point on the spacer upper surface and the fatigue behavior of the device that nicely matched the experimental curves. Conclusions. This approach represents a valuable tool to investigate the mechanical reliability of implantable devices; nevertheless, the use of advanced and specific failure criteria coupled with accurate data of the device’s material is mandatory to represent a real alternative to the experimental approach in fatigue life prediction.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of Applied Biomaterials & Biomechanics
Journal of Applied Biomaterials & Biomechanics 生物-材料科学:生物材料
自引率
0.00%
发文量
0
审稿时长
12 months
期刊最新文献
Flow investigation of second grade micropolar nanofluid with porous medium over an exponentially stretching sheet β-TCP/DCPD-PHBV (40%/60%): Biomaterial made from bioceramic and biopolymer for bone regeneration; investigation of intrinsic properties Cetylpyridinium chloride inhibits human breast tumor cells growth in a no-selective way The effects of several operative parameters on the grafting of selected grafting agents on a polyamide six (PA6) fiber surface A Copper nanoparticles-based polymeric spray coating: Nanoshield against Sars-Cov-2
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1