CAJ | 학술논문

基于耐低温合金材料的非线性特性，以某液化气船的低温独立液舱曲面外板加工成形过程为研究对象，研究其塑形变形过程及机理。利用 ABAQUS 作为计算分析工具，建立了板材原料及上、下加工模具的分析模型，给定冲压成形的时间和初始速度，并设定时间步长，考察每个时间步长的计算结果，分析了其加工过程中的弹塑性变形过程，评估了低温合金材料在加工过程中的板厚变化情况，并与实际加工测量值进行对比，验证了模型和计算分析过程的准确性。为各类低温独立液舱的设计和材料尺寸选用提供了技术支持和指导。
기우내저온합금재료적비선성특성，이모액화기선적저온독립액창곡면외판가공성형과정위연구대상，연구기소형변형과정급궤리。이용 ABAQUS 작위계산분석공구，건립료판재원료급상、하가공모구적분석모형，급정충압성형적시간화초시속도，병설정시간보장，고찰매개시간보장적계산결과，분석료기가공과정중적탄소성변형과정，평고료저온합금재료재가공과정중적판후변화정황，병여실제가공측량치진행대비，험증료모형화계산분석과정적준학성。위각류저온독립액창적설계화재료척촌선용제공료기술지지화지도。
Based on the nonlinear characteristics of low temperature resistant alloy, and taking the low temperature independent liquid tank curved shell plate processing process of a liquefied gas carrier as the research object, this paper studies its plastic deformation process and mechanism. The ABAQUS is adopted as the calculation and analyzing tool to establish the analysis model of the plate material and the upper and lower processing dies. By giving the stamping forming time and initial velocity and setting the time step, the computation result at each time step is inspected, the elastic-plastic deformation process during the forming process is analyzed, and the plate thickness variation of the low temperature alloy material is evaluated and compared with the actual measured data to validate the accuracy of the model and the computation analysis process. This study may provide some technical support and guidance for the design and material size selection of various kinds of low temperature independent liquid tank.