本文選題：梁單元　切入點(diǎn)：殼單元　出處：《建筑結(jié)構(gòu)》2017年S2期 　論文類型：期刊論文

【摘要】：梁單元和殼單元節(jié)點(diǎn)自由度存在差異,當(dāng)組合使用這兩種單元時(shí),其連接處需要恰當(dāng)處理。以兩個(gè)結(jié)構(gòu)為例,研究了ANSYS仿真模擬中如何實(shí)現(xiàn)梁單元與殼單元的連接,介紹了直接約束方程法、剛性區(qū)法,剛性梁法、MPC法這幾種可以實(shí)現(xiàn)兩種不同類型單元的連接方法。通過對(duì)變形,應(yīng)力,和應(yīng)力云圖的分析,比較了每種方法的優(yōu)缺點(diǎn)及計(jì)算精度。綜合而言,MPC法比其他方法適用性強(qiáng),計(jì)算精度高,且更接近實(shí)際連接狀態(tài)。連接范圍對(duì)計(jì)算結(jié)果有一定影響,進(jìn)一步探究了最佳約束范圍。結(jié)果表明,用實(shí)際結(jié)構(gòu)交界面范圍內(nèi)的節(jié)點(diǎn)建立連接范圍,計(jì)算效果最佳,擴(kuò)大或縮小連接范圍均會(huì)產(chǎn)生較大誤差。
[Abstract]:There is a difference in the degree of freedom between the beam element and the shell element. The connection between the beam element and the shell element should be dealt with properly when the two elements are combined. Taking two structures as an example, how to realize the connection between the beam element and the shell element in the simulation of ANSYS is studied. The direct constraint equation method, rigid zone method, rigid beam method and MPC method are introduced to realize the connection of two different types of elements. The advantages and disadvantages of each method and the calculation accuracy are compared. In a word, the MPC method is more suitable than other methods, and its accuracy is higher, and it is closer to the actual connection state. The connection range has certain influence on the calculation results. The results show that using the nodes in the interface range of the actual structure to establish the connection range is the best calculation result and the large error will be caused by enlarging or narrowing the connection range.
【作者單位】： 石家莊鐵道大學(xué)土木工程學(xué)院;石家莊鐵道大學(xué)大型結(jié)構(gòu)健康診斷與控制研究所;
【基金】：國家自然科學(xué)基金資助(項(xiàng)目批準(zhǔn)號(hào)U1334209)
【分類號(hào)】：TU31

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