The transient cfd simulation including the spiral case , stay vane , guide vane , runner vane and draft tube at different operation points is studied fitly , then the result of the pressure distribution on runner blade is provided for the runner transient structural simulation by fluid - structure interaction ( fsi ) method 文中首先對高水頭小負荷的渦帶工況下混流式水輪機內流場進行非定常cfd計算,得到渦帶工況下葉片表面不同時刻的水壓力載荷,并利用流固耦合方法對轉輪進行結構場瞬態(tài)特性計算,分析轉輪葉片的動應力特性。
In this paper , at first the cfd simulation including the spiral case , stay vane , guide vane , runner vane and draft tube at different operation points is studied , then the result of the pressure distribution on runner blade is provided for the runner structural simulation by fluid - structure interaction ( fsi ) method 本文首先對混流式水輪機全流道內流場進行了多工況的cfd計算,得到不同工況下轉輪葉片表面水壓力載荷,并利用順序流固耦合方法對轉輪在各種工況下的應力特性進行計算。
Three base isolation reinforced concrete buildings representing low - rise , mid - rise , and mid - high - rise buildings are modeled to perform structural simulations by utilizing sap2000 dynamic analysis . in which the isolator - seismic layer adopt some standard interlayer rubber isolator . numerical deformations and drifts are compared with those obtained from test data and experienced data to develop seismic design performence level of nonstructural elements . this research does not deal with structural strength or design , but rather deals with structural deformations and drifts that will have an impact on the performance of the architectural 本文設計了三個基礎隔震的鋼筋混凝土框架結構,分別代表低、中、高層建筑,其中隔震層采用標準件的夾層橡膠隔震墊,通過建立三維分析模型,運用sap2000軟件對結構進行非線性時程分析,分析結果與前人研究試驗結果分析對比,提出了非結構構件的抗震性能目標。
2 . a method combining some of the composite space structural simulation , wavelet analysis , fuzzy mathematical , genetic algorithm , artificial intelligence , expert system , vibration diagnosis , acoustic sounding , supersonic flaw detection , radioscopy , infra - red detection and so on to diagnose the composite structure damage is discussed 本文對把復合材料大跨建筑結構仿真、小波技術、模糊數學、遺傳算法、人工智能、專家知識、振動診斷、聲發(fā)射技術、超聲波檢測、射線探傷、激光全息檢測、紅外線檢測等方法中的幾種融合在一起對復合材料大跨建筑結構進行損傷診斷的方法進行了探討。