stacking sequence 中文意思是什麼
-
Sedimentary dynamic analysis of sequence structure and stacking pattern of base level cycle
基準面旋迴結構與疊加樣式的沉積動力學分析 -
By means of the calculation results of interlaminar stress distributions, the influence of delamination growth on the resultant fatigue lives is qualitatively discussed, realizing that a more comprehensive analytical model is essential to include the effect of stacking sequence and the arosing interlamina stresses on fatigue behaviors of laminates. the recommended scheme was also used to calculate the fatigue lives of specimens with central holes subjected tensile - compressive cyclic loadings and has got comparable estimations with experimental results
發現和修正了有關文獻中的一些錯誤，重新建立了斷裂筋條彎曲修正的公式和位移協調方程，編制了相應的計算程序，根據計算結果探討了斷裂筋條和筋條彎曲對蒙皮裂紋的影響，指出了有的文獻上給出的計算曲線存在的謬誤。 -
( 2 ) a stacking sequence optimization ( sso ) method of composite laminates based on ga is suggested in lower level optimization of hdo
（ 2 ）提出了基於ga的復合材料層合板疊層順序優化設計（ stackingsequeneeoptimization ，簡稱550 ）方法，用於hno的底層優化設計。 -
For the laminate which contains a crack, the suggested patch shape is rectangle, the patch thickness is equal to the parent laminate and the patch stacking sequence is the same as the parent laminate. because the length and the width of the patch have the fewer influence on the repair effect, the patch has the least weight on the basis of enough edge distance, end distance and space having been promised
?對于含裂紋復合材料層壓板，長方形補片的長度和寬度對修補效果沒有非常明顯的影響，因此在保證連接邊距、間距和端距的條件下，補片大小的選擇應該以節省重量為原則；而當補片的鋪排順序與母板相同、相對厚度為100時能夠獲得比較好的修補效果。 -
Guided by a series of theories and methods of high - resolution sequence stratigraphy and sedimentology, the characteristics of medium - term, short - term and ultra short - term base - level cycle sequences have been studied in chang 6 member, upper triassic, fuxian exploration area, and the base - level cycle sequence structure types and stacking - patters formulized in detail. the sedimentary characteristics of two types of sedimentary facies, four kinds of sedimentary subfacies and ten species of sedimentary microfacies have been generalized. it has been researched that the distribution and evolution rule of sequence sedimentary facies
本文以高解析度層序地層學和沉積學的理論與方法為指導，研究了富縣探區上三疊統長6段中期、短期和超短期基準面旋迴層序的特徵，詳細闡述了各級次基準面旋迴層序結構及疊加樣式；總結了長6段兩類沉積相、四種亞相以及十種微相的沉積特徵；闡明了長6段層序沉積相的展布與演化規律；在深入論述高解析度層序地層和沉積相與儲層發育關系的基礎上，評價預測了本區長6段的有利儲集相帶。 -
In this research, fatigue life of laminate composite is predicted phenomenologically, dealing mainly with in - plane stresses without accounting for out - of - plane failures such as delamination. fatigue modulus is used as a physical parameter which helps to describe the basic fatigue behaviour of unidirectional laminates and obtain expressions for cumulative damages defined by strains. based on some typical fatigue test data for unidirectional composite laminates, a cumulative fatigue damage model is presented for predicting the fatigue life of multidirectional laminates with arbitrary stacking sequence under complicated fatigue loadings
本文以碳纖維/樹脂基t300 / qy8911層壓結構為研究對象，從唯象的觀點出發，以疲勞模量為參量構造損傷函數，基於幾組最典型的單向板疲勞試驗數據，建立單向板在多軸循環應力作用下的疲勞壽命模型，並以此為基礎，發展同種材料體系的任意鋪層形式的多向層壓板在復雜循環載荷作用下的疲勞壽命預測方法。 -
After analyzing the function requirement of cad / cae / cam for fiber placement, and interface for further developing of existing cad / cae / cam software, further developing ug is selected as developing strategy for realizing cad / cam functions for fiber placement, and ansys is selected for realizing the cae function for fiber placement. effects made by stacking - sequence and fiber orientation angle on stress concentration around holes for tensile open - hole composite plate is studied. a new idea, general layup of composite laminates is comprised of simply - steered plies and fully - steered plies, is presented
本文就面向纖維鋪放的專用cad / cae / cam系統的軌跡規劃進行了相關研究，主要完成了以下幾方面的工作: 1 .基於纖維鋪放cad / cae / cam的需求，綜合分析了現有cad / cae / cam平臺性能及其二次開發介面，提出了應用ug平臺進行二次開發實現纖維鋪放cad / cam模塊與基於ansys平臺實現纖維鋪放的cae模塊相結合的開發策略。 -
Moreover, the system tracts in sequence are characterized by dualistic structure, namely transgressive - highstand system tracts, and tst > hst. the parasequences are divided into three types, which is respectively dominated by sandstones, mudstones, and shallowing - upward tidal flat system. and prograding sequence and retrograding sequence are composed of stacking parasequence set
層序中體系域具有二元結構特徵，即海侵?高水位體系域，且tst hst ，準層序類型有三種，分別是以砂巖為主的準層序、以泥巖為主的準層序和以潮坪體系向上變淺的準層序。 -
In this paper, the residual strength of damaged composite laminates and their repaired structures under unidirectional tensile stress is calculated. the influence of the repair parameters, such as the diameter of the circle patch, the length and the width of the rectangle patch, the thickness of the patch, the stacking sequence is discussed
本文對含損傷復合材料層壓板及其修補結構在單向拉伸載荷作用下的剩餘強度進行了計算，同時對補片參數對修補效果的影響做了一些研究和探討，主要做了以下幾個方面的工作： 1 -
The residual strength of damaged composite laminates and their repaired structures are calculated, and the influence of the repair parameters is discussed by the finite element and program stated above. some useful conclusion can be drawn according to the curves, which show the influence of repair parameters to repair effect. for the laminate which contains a circle hole, the suggested patch shape is circle, the patch size is 2 to 3 times than the diameter of damaged hole, the patch thickness is equal to the parent laminate and the patch stacking sequence is the same as the parent laminate
用所建立的二維有限元模型和編寫的有限元程序計算損傷板及其修補結構的剩餘強度，並分析了修補參數對修補效果的影響；根據本文計算得到的修補參數對修補效果的影響曲線，可以得到如下結論： ?對于含孔復合材料層壓板，當圓形補片與母板鋪排順序相同、直徑為損傷孔直徑2 3倍、相對厚度為100時能夠獲得比較好的修補效果。 -
In upper level optimization, the thickness and geometry factors of composite skins and webs as well as other structural dimensions are taken as design variables. then, considering the behavior constraints and the side constraints, the structural mass is minimized by the mathematical programming technique. in lower level optimization, the mathematical programming technique or the genetic algorithm ( ga ) is used to search the practical stacking sequence of composite skins and webs to realize the given thickness and geometry factors from upper level optimization
底層優化設西北工業大學博士學位論文計以復合材料蒙皮和腹板等層合板各分層的厚度（或鋪層數） 、鋪層角和鋪層順序為設計變量，以層合板的幾何因子與頂層優化設計給出的最優幾何因子之間的誤差最小為目標，考慮層合板厚度和製造工藝性約束，採用數學規劃方法或遺傳演算法（ geneticalgorithm ，簡稱ga ）求出底層最優設計變量。 -
In sso, the thickness of each stack of the laminate must be integer times as thick as that of single ply, the angle of each stack of the laminate is selected from a set of standard angles, and the stacking sequence can change arbitrarily. when material and ply angles of the laminate are selected, ga is used to giye the optimal laminate that meets the given requirements of thickness and geometry factors
在550中，層合板各分層的厚度必須是單層材料厚度的整數倍，鋪層角取作一些標準的角度，各分層在層合板厚度方向上的相對位置可任意變化，利用ga求出滿足給定厚度和幾何因子要求的層合板最優鋪層結構。
分享友人