Mechanical Engineering Journal最新文献_第9页

Analysis of effective measures for power fluctuation mitigation of geographically distributed wind and solar power 地理分布的风能和太阳能电力波动缓解的有效措施分析

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00154

Biness Lukwesa, Naoya Takahashi, Kengo Suzuki, Yutaka Tabe, T. Chikahisa

引用次数: 0

Occurrence of plastic collapse under ratcheting due to gravity and seismic loading 重力和地震荷载作用下棘轮塑性破坏的发生

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00321

Satoru Kai, M. Ichimiya, N. Kasahara

{"title":"Occurrence of plastic collapse under ratcheting due to gravity and seismic loading","authors":"Satoru Kai, M. Ichimiya, N. Kasahara","doi":"10.1299/mej.21-00321","DOIUrl":"https://doi.org/10.1299/mej.21-00321","url":null,"abstract":"The most dominant failure mode of piping components under seismic loading is fatigue failure with ratcheting. While it was confirmed via the experimental tests in the past, the Primary stress limit is applied to seismic loading to prevent plastic collapse. The plastic collapse due to seismic loading was first confirmed at Pipe-Fitting Dynamic Reliability Program (PFDRP) conducted by EPRI in 1980s. But, the mechanism and occurrence condition of this failure has not been clarified yet. In this research, a composite failure mode of the ratchet-induced collapse, which represents the behavior of the plastic collapse failure induced by ratchet deformation, is introduced. The transition of the failure modes along ratcheting is explained with the seismic failure mode map which identifies the occurrence condition of ratcheting and first-excursion failure, and the X-Y trajectory, which explains the excitation condition of structures under ratcheting, is introduced to project the transition. With the X-Y trajectory and the occurrence condition of the plastic collapse, this study conceptually proposes the prediction approach of the ratchet-induced collapse without the simulation analyses.","PeriodicalId":45233,"journal":{"name":"Mechanical Engineering Journal","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66397439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation and experimental research on gas temperature deviation on converting to bituminous coals in tangentially lean coal boiler 切向贫煤锅炉转化烟煤时燃气温度偏差的模拟与实验研究

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00417

Junsheng Zhao, Jin Wang, Yifan Bie, Xiaopei Li, Q. Cheng, Zixue Luo

引用次数: 0

Core thermal-hydraulics analysis during dipped-type direct heat exchanger operation in natural circulation conditions 浸没式直接换热器自然循环工况下堆芯热工分析

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00438

Erina Hamase, Y. Miyake, Y. Imai, Norihiro Doda, A. Ono, Masaaki Tanaka

引用次数: 0

Errata: Numerical simulation of the thermal radiation and convective heat transfer characteristics of the second superheater in a coal-fired thermal power plant boiler [Mechanical Engineering Journal, Vol. 9, No. 4 (2022), 22-00040] 火电厂锅炉二次过热器热辐射和对流换热特性数值模拟[j] .机械工程学报，Vol. 9, No. 4(2022)， 22-00040。

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.22-00040e01

Kizuku Kurose, K. Miyata, S. Umezawa, Shuichi Ohmori

引用次数: 0

Prediction of physical fields for supercritical carbon dioxide turbine using deep learning method 基于深度学习方法的超临界二氧化碳涡轮物理场预测

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.22-00034

Jiarui You, Tianyuan Liu, Yuqi Wang, Bo-yen Tang, Yonghui Xie, Di Zhang

引用次数: 1

Detection of Cu particles volume fraction in vibrating Al-Cu mixtures by multiple-amplitude modulation implemented in impedance measurement system (mAM-IMS) 阻抗测量系统(mAM-IMS)中多重调幅法检测振动Al-Cu混合物中Cu粒子体积分数

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00379

P. A. Sejati, M. Baidillah, Y. Prayitno, K. A. Ibrahim, D. Kawashima, M. Takei

引用次数: 3

Investigation of the vibration-induced local flow around a micro-pillar under various vibration conditions 不同振动条件下微柱周围振动诱发局部流动的研究

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.22-00223

K. Kaneko, Z. Huang, Taku Sato, Naoto Ujikawa, T. Hayakawa, Y. Hasegawa, H. Suzuki

引用次数: 1

Topology optimization for maximizing linear buckling load based on level set method 基于水平集法的线性屈曲载荷最大化拓扑优化

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.21-00425

Naoyuki Ishida, Tsuguo Kondoh, K. Furuta, Hao Li, K. Izui, S. Nishiwaki

引用次数: 2

Layout optimization of the beam spot locations scanned by electromagnets in particle beam therapy 粒子束治疗中电磁铁扫描束斑位置的布局优化

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Mechanical Engineering Journal Pub Date : 2022-01-01 DOI: 10.1299/mej.22-00140

Yusuke Sakamoto, Takayuki Nagashima, Yuki Sato, K. Izui, S. Nishiwaki

引用次数: 0