Impact resistance and energy absorption characteristics of nickel-based alloy ring at elevated temperatures

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Impact Engineering Pub Date : 2024-08-21 DOI:10.1016/j.ijimpeng.2024.105089

Miao Cao , Chenchen Wang , Jintao Wu , Cunxian Wang , Zhenqiang Zhao , Jun Liu , Yulong Li

{"title":"Impact resistance and energy absorption characteristics of nickel-based alloy ring at elevated temperatures","authors":"Miao Cao , Chenchen Wang , Jintao Wu , Cunxian Wang , Zhenqiang Zhao , Jun Liu , Yulong Li","doi":"10.1016/j.ijimpeng.2024.105089","DOIUrl":null,"url":null,"abstract":"<div><p>To evaluate the high-temperature containment capability of a turbine casing, the impact resistance of half-ring specimens and full circular casings made of GH4169 nickel-based alloy was investigated. Ballistic impact tests were first conducted on GH4169 half-ring specimens using blade-shaped projectiles of DZ125 material fired from a single-stage gas gun. Meanwhile, explicit finite element simulations of the half-ring impact tests were performed with LS-DYNA. Comparing experimental and simulation results validated the accuracy of the model and revealed the effects of impact angle and ambient temperature. Then the process of a turbine casing containing a blade at 500 °C was simulated using the validated FE model. The results showed that the impact angle and the ambient temperature significantly affect the impact resistance of GH4169 half-ring specimen. Furthermore, the interaction mechanism between the turbine blade and casing differs across the three stages of the containment process.</p></div>","PeriodicalId":50318,"journal":{"name":"International Journal of Impact Engineering","volume":"194 ","pages":"Article 105089"},"PeriodicalIF":5.1000,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Impact Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0734743X24002148","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

To evaluate the high-temperature containment capability of a turbine casing, the impact resistance of half-ring specimens and full circular casings made of GH4169 nickel-based alloy was investigated. Ballistic impact tests were first conducted on GH4169 half-ring specimens using blade-shaped projectiles of DZ125 material fired from a single-stage gas gun. Meanwhile, explicit finite element simulations of the half-ring impact tests were performed with LS-DYNA. Comparing experimental and simulation results validated the accuracy of the model and revealed the effects of impact angle and ambient temperature. Then the process of a turbine casing containing a blade at 500 °C was simulated using the validated FE model. The results showed that the impact angle and the ambient temperature significantly affect the impact resistance of GH4169 half-ring specimen. Furthermore, the interaction mechanism between the turbine blade and casing differs across the three stages of the containment process.

查看原文本刊更多论文

镍基合金环在高温下的抗冲击性和能量吸收特性

为了评估涡轮机壳体的高温密封能力，研究了由 GH4169 镍基合金制成的半环试样和全圆壳体的抗冲击性。首先对 GH4169 半环试样进行了弹道冲击试验，使用单级气枪发射的 DZ125 材料刀片形弹丸。同时，利用 LS-DYNA 对半环冲击试验进行了显式有限元模拟。对比实验和模拟结果，验证了模型的准确性，并揭示了冲击角度和环境温度的影响。然后，使用验证过的有限元模型模拟了在 500 °C 下包含叶片的涡轮机机壳的加工过程。结果表明，冲击角度和环境温度对 GH4169 半环试样的抗冲击性能有显著影响。此外，涡轮叶片与机壳之间的相互作用机制在封存过程的三个阶段有所不同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications