Formulation of Time-domain Homogenization Method for Cyclic Deformation Analysis of Railway Ballast

• KORO Kazuhiro

  新潟大学大学院自然科学研究科

• KAKAZU Toyo

  ホープ設計

• ABE Kazuhisa

  新潟大学工学部建設学科

Bibliographic Information

Other Title

• 鉄道用バラスト材の繰り返し変形解析のための時間域均質化法定式化
• テツドウヨウ バラストザイ ノ クリカエシ ヘンケイ カイセキ ノ タメノ ジカンイキ キンシツカホウ テイシキカ

Abstract

The time-domain homogenization method for hypoplastic elastoplastic model is formulated for cyclic defor-mation analysis of railway ballast, and its numerical algorithm for stress analysis is developed. The multiple temporal scales of the stress, strain and void ratio are introduced, and the original constitutive equations are decomposed into coupled micro-chronological and macro-chronological equations using asymptotic anal-ysis. Accuracy of the simulated macro-chronological strain, corresponds to the accumulated permanent strain induced by cyclic loading, depends on the approximation of the time derivatives of temporal averages of micro-chronological response.

Journal

• Journal of applied mechanics

  Journal of applied mechanics 11 149-158, 2008

  Japan Society of Civil Engineers

Keywords

• railway ballast
• hypoplastic model
• cyclic loading
• time-domain homogenization method

Details

• CRID: 1390001205208093440
• NII Article ID: 130004091226
• NII Book ID: AA12492021
• DOI: 10.2208/journalam.11.149
• ISSN: 1884832X
• ISSN: 13459139
• HANDLE: 10191/24747
• NDL BIB ID: 9664274
• Web Site: https://niigata-u.repo.nii.ac.jp/records/2836
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9664274
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed