塑性壞學 的英文怎麼說
中文拼音 [sùxìnghuàixué]
塑性壞學
英文
plastizittsmechanik mechanics of plasticity-
After the stolon had suffered from severing disturbance, clonal ramets could keep photosynthetic organ from being damaged through the plastic responses of the chlorophyll fluorescence traits, such as increasing nonphotochemical quenching of chlorophyll fluorescence ( npq ), decreasing actual photochemical efficiency of ps ii in the light ( f / fm " ) and photochemical electron transport rate ( etr ). moreover, the clonal ramets could also increase water use efficiency by means of decreasing stomatal conductance
在匍匐莖受到切斷干擾后，臭柏能通過提高非光化學猝滅（ npq ） 、降低ps實際光化學量子產量（ f fm 』 ）和表觀光合電子傳遞速率（ etr ）等葉綠素熒光特性的可塑性反應來保護小枝光合機構不被破壞，並且可以降低氣孔導度以提高水分利用效率。The following conclusions are gained : ( 1 ) the located shear band prongs the ligament near the top crack tip and the structure may occur shear - mode fracture at the angle of 155 ? to crack when load is 87. 92mpa ; the mode of fracture of the flange joint structure is not possible to be void - mode ; ( 2 ) it is proved that loading and then unloading repeatedly can not increase the possibility of invalidation of the structure when the times of loading and unloading are not too more when load is operating pressure ; the structure is safe when the vessel is operating ; ( 3 ) in the fe model of the thesis, not considering the influence of water pressure test which is in the process of fabrication of vessel in fe results in larger deviation in analysi
得出了以下結論：在8792mpa的載荷下筒體一封頭連接結構處的集中剪切帶貫穿韌帶，可能發生沿與原裂紋線成155 「角方向剪切型斷裂；筒體一封頭連接結構不可能發生韌窩型斷裂； （ 2 ）在工作壓力下進行次數不多的反復加、卸載，結構不會破壞，也不會喪失安定性：結構在工作狀態下是安全的； m在本文的彈塑性有限元模擬計算中，對于裂紋尖端進行力學分析時，不考慮壓力容器製造過程中水壓試驗的影響，將導致計算結果出現較大的偏差； （ 4 ）筒體完全屈服時的載荷為92石3mpa ，封頭完全屈服時載荷為86Based on thermodynamics laws, inner - variable theory and analysis of conventional tn - axial tests data and breakage characteristics of loess, this paper proposed that the loess would produce elastic, plastic and nonreversible damage deformation during loading
從熱力學定律和內變量理論出發，在對常規三軸試驗數據和土樣的破壞特性分析的基礎上，認為土體在受力過程中將產生彈性變形、塑性變形和不可逆損傷變形。I. a mtil ( iaxial elastic - plastic hardening - sofling constitutive model of concrete is proposed iii order to offer a nonlinear material model of concrete for space restoring force analysis of reinforced concrete members taking into account the softening behavior of concrete. the concrete material model is incorporated the elastic - plastic hardening fracturing constitutive model of concrete with the plastic - fracturing theory of concrete, modified without defining two loading functiomis, and based on five parameter power function failure criterion proposed by guo zheng - hai etc from tsingliua ( jniversity, or three parameter unified strength theory proposed by yu mao - hong from x ian iiaotong university
1 、將砼彈塑性硬化斷裂本構模型與塑性斷裂理論結合起來，並加以改進，但無需定義兩個加載面，以清華大學過鎮海建議的五參數冪函數或以西安交通大學俞茂宏建議的，參數統一強度理論作為砼的強度破壞準則，建立了砼多軸彈塑性硬化松馳本構模型，能為鋼筋砼構件空間恢復力分析提供砼非線性材料模型，並能反映砼材料的軟化段。Secondly, in view of the limitation and shortage of traditional simulation of finite element approaches for bolt, a new composite grouted bolt element including nonlinear contacting relation will be built based on the above study of the mechanics mechanism of fully grouted bolt. then, an elastic - plastic finite element program will be developed for the analyses of tunnel stability, in which the composite grouted bolt element and nonlinear finite element analysis method will be used ; the patterns and the affect of main design parameters on the support effect of bolt will be analysed using the program, and conclusions of guidance importance for tunnel support design will be drawn. finally, simulation compution for the excavation and support of a highway tunnel will be made out using the above production, and the method of application of the program will be discussed ; analysis of the deformation, stress and distribution of plastic range will be done, and rational support plan will be worked out, which is of guidance importance for tunnel support design and the thery and technique of fully grouted bolt used in tunneling will be perfected further
首先，本文在綜合分析隧道穩定性影響因素及失穩破壞模式的基礎上，對全長粘結式砂漿錨桿作用力學機理進行了深入研究，為全長粘結式砂漿錨桿的有限元模擬分析奠定了基礎;其次，針對傳統錨桿有限元模擬方法的局限性與不足，在上述全長粘結式砂漿錨桿作用力學機理研究基礎上，建立出能反映界面非線性粘結的新型復合砂漿錨桿有限單元模型;然後，運用上述復合砂漿錨桿單元模型，引進非線性有限元分析手段，開發了隧道支護穩定性分析的有限元程序，並就全長粘結式砂漿錨桿的型式與設計參數對支護效果的影響進行了深入探討，得到了對隧道支護設計具有指導意義的結論;最後，運用本文研究成果對某公路隧道工程實例進行了開挖與支護的模擬計算，探討了其應用方法，並就隧道變形與應力及塑性區分佈規律進行了分析，從而提出了合理的支護方案，為隧道支護設計提供了參考依據，完善了隧道全長粘結式砂漿錨桿支護的理論與方法。Researching on the technology if reverse order is to study strains if pits, structural systems if basement, environmental surwey and underpinnings. on account of emphasizing developing methods if checking strength if pick - ets, modemizing machenes of excavation and studying methods of underpinning is put forward and is a way if controlling the quality of pickets in sites, which leads an active effect ; synthetic application if rankintheory, spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward and the time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found ; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it. duringh the temporary survey and the environmental warship, bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration ; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed
鑒于國內外的研究把重點放在大力發展工程樁的實驗室承載力監測方法與設備、如何使土方開挖機械現代化及對周圍建築的臨測方法上，本文提出了現場利用聲波層析成像技術監測鋼砼樁內部質量的方法與程序，並得出了聲波層析成像技術是砼樁的動態質量檢測的有效手段，這對指導施有積極、現實意義；提出了綜合運用朗肯土壓力理論、基坑空間和時間效應影響理論來分析逆作法施工過程中基坑邊坡土體應力及應變的變化情況，指出粘土地區也應考慮時間效應，並且進一步分析了基坑邊坡土體的塑性區形成和發展，找出邊坡最不利的區域，以確定地下室土體的挖掘的方式和順序，指出憑主觀臆斷與經驗來施工是不可取的；在分析、經較逆作法與大開挖順作法的地下室結構體系受力情況及施工順序的不同，提出了節點處理技術；分析了逆作法施工期間樁的沉降變化原因及由此而產生的差異，並探討了解決的方法；本文還提出了環境振動對土體邊坡穩定產生影響的觀點，並分析了在環境振動影響下，土體的應力狀態及土休失穩破壞概率，並且還運用彈性力學知識和數學分析的方法定量地分析了地下混凝土墻受力狀態，指出了被監測墻體的最大應力、應變位置。Compares with the wooden block plate has the nature lightly, steady, artistic, the integrity good, does not have the nail smoothly, tasteless non - toxic, acidproof, bears the alkali, anti - corrosive, is easy to flush the disinfection, not to be rotten, does not aid combustion, does not have the static electricity spark, may recycle and so on the merit, the service life is wooden tray 5 - 7 time ; is important tool which the modernized transportation, the packing, stores in a storehouse, is on international stipulates uses in profession storage necessary equipment and so on food, aquatic product, medicine, chemical ; the company persisted fulfills pledged : the product guarantees a nature for year ( artificial damage to be an exception ) " outside 保質期, bad tray three trade one "
塑料托盤：與木托盤相比具有質輕、平穩、美觀、整體性好、無釘無刺、無味無毒、耐酸、耐堿、耐腐蝕、易沖洗消毒、不腐爛、不助燃、無靜電火花、可回收等優點，使用壽命是木托盤的5 - 7倍；是現代化運輸、包裝、倉儲的重要工具，是國際上規定的用於食品、水產品、醫藥、化學品等行業儲存必備器材；公司堅持履行承諾：產品保質一年（人為損壞除外） 「保質期外，壞托盤三塊換一」 。Abstract : based on the analysis of the main causes of stope chute failure, flac3d numerical calculation software is used in the systematic study of the mechanical state of the surrounding rock before and after the chute reinforcement from the aspects of the stress distribution of rock mass, the plastic fractured region and the movement of rock mass so as to disclose the fracture mechanism of the surrounding rock and the mechanical system of the reinforcement engineering
文摘:在分析造成采場溜井破壞的主要原因基礎上，應用flac3d數值計算軟體，從巖體應力分佈、塑性破壞區和巖體移動等方面，系統研究了溜井加固前後的圍巖力學狀態，揭示了圍巖破壞機理和加固工程的力學機制。Nonlinear elastic model can stimulate the hardening part before peak value, but the stimulation to softening part is not satisfying. elasto - plastic model can basically stimulate the full course of loess deformation, but the stimulation to softening part is not better than that of hardening part. elasto - plastic damage model is the best model of stimulating loess deformation, and the breakage degree during the loess deformation can be estimated based on magnitude and variety of the damage
非線性模型可以模擬峰值前的硬化部分，但不能很好模擬軟化段較陡的降落；彈塑性模型基本能夠模擬土體變形的全過程，但對軟化段的模擬有一定偏離不如硬化段好；彈塑性損傷模型模擬土的變形特性效果最好，可以對土的西安理工大學碩士學位論文一變形全過程較好的模擬，並能根據損傷變量的大小和變化定量評價土體在不同變形階段的破壞程度。It is one of mechanisms of plastic distortion, at the same time it is also the beginning of microcosmic damage and rupture before the macroscopical destroying of materials, it representatives a mid - state between materials " macroscopical rupture and bend, it is considered a premonitory that the rupture of polymer material, which get common attention by scholar inside and outside nation. therefore, the research for engineering polymer in mechanic action of non - linearity destroy such as distortion, destroy and depe nd on time and temperature is valuable in theoretic research and actual application, which offer the important theoretic gist for changing complex material ' s capability and actualize polymer ' s perfect application with high quality of capability in engineering
同時，銀紋化和銀紋損傷是高聚物特有的一種現象，細觀層次的銀紋引發、生長和斷裂在聚合物損傷斷裂的整個過程中起著承前啟后的作用，它是溝通宏、微觀變形機制的橋梁，是材料塑性變形的機制之一，同時又是材料宏觀破壞以前微觀上損傷、破壞的開始，它代表材料微觀斷裂和屈服之間的一個中間狀態，可以看作是聚合物材料宏觀斷裂的先兆，受到國內外學者們的廣泛關注。因此，開展工程聚合物變形、破壞以及時間相依和溫度依賴性等非線性力學行為研究，探討聚合物破壞過程中的非線性力學行為，為聚合物及其復合材料的改性、實現聚合物的工程化與高性能化提供重要的理論依據，具有重要的理論研究意義和實際應用價值。分享友人