Journal Pre-proofs Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics Wenjie Du, Xiaodong Fu, Qian Sheng, Jian Chen, Yuxiang Du, Zhenping Zhang PII: S0013-7944(20)30896-1 DOI: https://doi.org/10.1016/j.engfracmech.2020.107315 Reference: EFM 107315 To appear in: Engineering Fracture Mechanics Received Date: 27 June 2020 Revised Date: 9 September 2020 Accepted Date: 14 September 2020 Please cite this article as: Du, W., Fu, X., Sheng, Q., Chen, J., Du, Y., Zhang, Z., Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics, Engineering Fracture Mechanics (2020), doi: https://doi.org/10.1016/j.engfracmech.2020.107315 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier Ltd.