geometric variable 中文意思是什麼
geometric variable
解釋
幾何變星-
This research use aluminum with characteristic to conduction and easy prune, make some kinds of geometric figure for variable, in the same surface area, using different geometric figure carry on electromagnetic wave absorb of testing effect
摘要本研究利用鋁鉑導電及易於裁剪的特性，製作各種不同幾何圖形作為實驗之變因，在相同表面積下，以不同幾何圖形，進行電磁波吸收效果的測試。 -
Steel frame with welding joint easily occur brittle collapse because of having a low ductility at joints then ， a semi - rigid connected steel frame has large the energy absorption capacity which can resist dynamic loads and the using steel qualities of bracing system and joints are small so adopting a semi - rigid jointed steel frame is economical and stable but for semi - rigid connections are complex and variable ， in conventional analysis and design of steel structures ， it is usually assumed that the connections between columns and beams are either rigid or pinned the analysis of steel frames adopting the assumption can simplify the procedure of analysis and design ， but cannot precisely reflect structural practical circumstance and the errors of calculating results are large ， even ， get incorrect conclusions semi - rigid connection was referred to in chinese code for design of steel structures ( 2001 ， 10 ) ， however ， it isn ’ t specified how to apply semi - rigid joints in design in fact it cannot be carry out the purpose of the paper give a calculating method that accords practical engineering and easily put into effect worthwhile it is going to promote the development of semi - rigid jointed steel frame in design and heighten structural stability in the paper ， at first some commonly employed methods for the modeling of connection behavior are introduced richard abbott function modeling of connection is adopted for extended end plate bolted connection by the 34 test data comparing to regression analysis indicate richard - abbott function modeling of connection represents an excellent fit to test data then after a semi - rigid joint behavior can be modeled as a finite stiffness rotation spring ， base on rotation and displacement equation derive the element stiffness matrixes with semi - rigid connections where the effects ofj ointed flexibility geometric non - linearity and shear forces in the connection deformations have been considered in and fixed - end forces are modified finally, a program for calculating semi - rigid with incremental - iterative method has been
本文的目的就是為半剛性連接鋼框架的設計提供一種既符合工程實際又簡便易行的計算方法，供規范使用過程的補充、延伸或參考；同時，也將促進半剛性連接鋼框架設計技術的發展，為提高結構安全性能、節省工程成本發揮應有的作用。本文首先介紹了常見的幾種應用較為廣泛的樑柱連接彎矩轉角關系模型，在分析比較的基礎上，選用richard ? abbott函數模型作為外伸端板連接彎矩轉角關系模型，通過對34個外伸端板連接的實驗數據與回歸分析得到的參數比較可知，經回歸分析得到的此模型參數與實驗數據符合較好。然後用彈簧表徵連接點的轉動剛度，根據梁的轉角位移方程推導出半剛性連接的剛度矩陣，在單元剛度矩陣中考慮了節點柔性、幾何非線性和剪切變形的影響，並對固端力進行了修正，最後用增量迭代法編制有限元程序進行計算和分析。 -
Basic index and reliability principle of steel structure, and geometric significance are analyzed. the main computation methods, such as two order moment method, separation function and separation item coefficient, linear separation, and central point, check point, monte - carlo are presented. reliability analysis under relative variable, boundary determination ( single and double boundaries ) is analyzed
研究了鋼結構可靠度基本原理、可靠指標的幾何意義，分析了鋼結構可靠度計算的一次二階矩方法、分離函數和分項系數法、線性分離法，以及中心點法、驗算點法、蒙特卡羅（ monte - carlo ）法，提出了變量相關情況下的結構可靠度分析方法、可靠度界限分析方法（單側界限與雙側界限） ，基於極值分佈的可靠度分析，並對鋼結構動力可靠度分析方法進行了初步探討。 -
The nonlinear magneto - elastic basic equations of thin current - carrying strip - plate are built, based on the kinetic equations, the geometric equations, the physical equations and the electrodynamics equations of thin current - carrying plate, the normal cauchy form nonlinear differential equations, which includes ten basic unknown functions in all, are obtained by means of variable replacement method
摘要在所建立的載流條形薄板的非線性磁彈性基本方程運動方程、幾何方程、物理方程和電動力學方程的基礎上，通過變量代換，整理成含有10個基本未知函數的標準柯西型方程。
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