Development and application of VDI 2230 theoretical bolt automatic checking platform considering relaxation behavior
ZHU Shenling
LEI Gang
MA Daokuang
CHEN Gang
TAO Zhidong
LIU Ao
Abstract：To address the inefficiency in extracting bolt stress data during the creep process and the complexity of the bolt strength verification procedure,an automated bolt verification platform was developed.Firstly,a finite element model for creep analysis of the engine block and cylinder head bolt connection structure was established in Abaqus.Based on the finite element analysis results and the VDI 2230 theory,bolt strength verification was conducted.The platform integrates the formulas,algorithms,and database for bolt verification as stipulated in the VDI 2230 theory.Subsequently,different modules of the platform enable automatic extraction of bolt finite element results,automatic bolt strength verification,and automatic generation of corresponding bolt verification reports through the execution of CAE secondary development scripts.The results indicate that after creep occurs in the engine block and cylinder head,all safety factors of the cooperating cylinder head bolts comply with the standards.
Keywords：Bolted jointCreep relaxationVDI 2230 theorySecondary development of CAEChecking platform
Publication Date：2025-12-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 118-126 )