impact coefficient 中文意思是什麼

impact coefficient 解釋
沖擊系數
  • impact : n 碰撞;沖擊(力);(火箭的)降落[著陸];【軍事】彈著;影響,效力。 The point of impact彈著點。 ...
  • coefficient : adj. 共同作用的。n. 1. 共同作用;協同因素。2. 【數,物】系數,率;程度。
  1. Establishing an human spine dynamic model is an significan event to study spine injured biomechanics of pilot " s ejective injury, parachute opening, landing and study the endurance to impact loading on human spine. in this paper, the huston " s method of kane " s equations is developed so that it can be applied to the multibodysystem including translation between the bodyies. the dynamic model of human spine is provided basing on these theories, while the big movement of spine is considered. the deformation of vetebra is far smaller comparing with the intervetebra disc, so the spine is considered into multibodysystem including rigid bodies ( vetebra ) and the flexible bodies ( intervetebra disc ). the computer solution correspond with the results of the large scale human impact test. the rigid coefficient factors and the damping factor of intervetebra joints are obtained

    人體脊柱動力學模型的建立對研究飛行員彈射救生、傘兵跳傘開傘、著陸等脊柱損傷的生物力學以及研究人體脊柱耐受沖擊載荷的極限問題都具有重要意義.首先發展了凱恩方程的休斯頓方法,使其可應用於變形體連接的多體系統,並以此理論為依據建立人體整椎脊柱沖擊動力學模型,此時考慮脊柱的大位移運動,每個椎骨的變形相對椎間盤的變形小得多,把脊柱看成由剛體(椎骨)和變形體(椎間盤)組成的多體系統.並以大型真人坐姿沖擊實驗結果進行了擬合,最後得到腰椎間關節剛度系數因子和阻尼系數因子
  2. With the material dynamic constitutive equation including damage and the effect of stain rate the predictable formula about ballistic limit velocity of fiber composite target. secondly based on the damage feature about ceramic / fiber composite target caused by impact load, analysis model about defense performance of ceramic / composite material target is formed and the predictable formula about ballistic limit velocity is also given. lastly using the reflection and projectile theory of stress wave the paper discusses the design of ceramic / composite material target, optimizes the design of double layer ceramic / composite targets, gains optimal coefficient under certain area density and discusses the variety relationship of area density and thickness with optimal coefficient u nder some ballistic limit velocity 3

    首先,分析了纖維類正交鋪層復合靶板在沖擊載荷作用下的損傷破壞機理,結合包含損傷和應變率效應的材料動態本構方程,建立了纖維復合材料板彈道極限速度的預測公式;其次,根據陶瓷/纖維材料復合靶板在沖擊載荷下的破壞特點,建立了陶瓷/復合材料靶板抗彈性能分析模型,給出了彈道極限速度預測公式;最後,利用應力波反射和透射理論討論了陶瓷/復合材料靶板的設計問題,對雙層陶瓷復合靶板的優化設計進行了分析,給出了在一定面密度下的最佳優化系數,討論了一定彈道極限速度下的面密度和厚度隨優化系數的變化關系。
  3. Through the analysis and studying of this subject, we can make conclusion as followed : during the whole heating season, the change law of the energy consumption of the thermal bridge is with the change law of the meteorological condition inside and outside the room : when airs temperatures indoor is steady, thermal bridge energy consumption increases with reducing of air temperature outside the room, reduce oppositely. the different position and the different structure patterns of the thermal bridges, even under the same meteorological condition inside and outside of the room, energy consumption of the building is different, and impact on heating energy consumption is different, this is mainly caused by the difference of the constructs thermal bridge and different influence in term of out wall, which lead to total mean heat - transfer coefficient different, when the heat - transfer coefficient is relatively small of outer wall, the impact of wall body is more obvious on heat - transfer coefficient of the thermal bridge

    然後確立了在節能建築中熱橋耗熱量與室內外氣象參數和熱橋構造型式的關系,分析與研究並得出:在整個採暖季節中,熱橋的能耗隨著室內外氣象條件的變化規律是:在室內空氣溫度一定時,熱橋能耗隨著室外空氣溫度的降低而增大,相反減小;不同部位的熱橋,其構造型式不同,即使在相同的室內外氣象條件下,產生的能耗也是不同的,並且對採暖能耗的影響也不同,這主要是由於不同構造的熱橋對外墻的總平均傳熱系數的影響不同所造成的,並且當外墻主體的傳熱系數較小時,熱橋對墻體的傳熱系數的影響更加明顯。
  4. On the base of milling ball interaction during milling process, the powder height of each collision can be calculated. if the impact of milling ball takes as hertz elastic collision, the maximum real strain and the maximum tangential strain are obtained as follows, e, . , ln [ h, / ( h0 ? vrcos6 / 2 ) ] = vrsin6 / h0 ? / q, t2rt2 / 2om ~ h, j where s, p, v are maximum real strain, the maximum tangential strain, friction coefficient and the velocity of milling ball

    對球磨過程中磨球相互作用作了一些假設后,可以計算出每次碰撞所獲得粉末體高度值;將磨球的碰撞作為hertz彈性碰撞,碰撞時的速度分解為法向速度和切向速度得出粉末的最大真應變和最大切應變為湖南大學材料物理與化學專業碩士論文r 。
  5. This paper presents a theoretical model for the coefficient of restitution calculation of point impact

    摘要建立了一種計算點接觸正碰撞恢復系數的理論模型。
  6. Friction coefficient caused by adhesion and ploughing relevant to impact wear

    與沖蝕有關的粘著與犁溝摩擦系數
  7. As the content of vermiculite minerals was about 3 %, the impact strength ( nick ), the flexural strength and the heat distortion temperature ( hdt ) of the nanocomposites all were the lowest and decreased 21 %, 28 %, 3c, respectively. compared with those of the polybenzoxazine ( bisphenol a type ), its thermal expanded coefficient ( tec ) was 3. 4 % bigger than that of the polybenzoxazine ( bisphenol a type )

    雙酚a型ben蛭石納米復合材料的力學性能和熱性能表現出明顯的結構特徵,普遍地低於純樹脂的性能數值,而優于雙酚a型ben金雲母復合約zi和zs 「熱變形溫度dt )低約3 ,線膨脹系數高約3
  8. In this paper, based on the analysis of the rlem of theory foundation, computing method, preference, applicability, etc, we anatomized the rlem of three self - deficiencies and six scarcities. moreover, we adopted the parallel ways of contrasting the rlem with the fem and applied it to analyzing the impact of slide block of elasticity and plasticity, slip surface of coefficient and slip bed of elasticity, plasticity upon the stability of slope and in the plain linearity slope, the plain refracted line slope and the plain arc slope. in addition, we discussed the warp of between the lem of ( sarma, janbu, order, bishop, morgenstera - price, etc ) and the fem of result and the distributing of positive stress and shear stress on the slip surface

    本文從剖析剛體極限平衡法的理論基礎、計算方法、參數選取、適用條件等方面入手,剖析了剛體極限平衡方法的3點自身缺陷和6點不足,並在此基礎上採用了剛體極限平衡法(平面滑動破壞法、 sarma法、傳遞系數法、普遍條分法、 janbu法、 bishop法、 morgenstern - price法)與大型有限元法對比研究的方法,分析研究了平面直線型滑坡、平面折線型滑坡、平面圓弧型滑坡在漸進破壞中邊坡的滑體彈塑性參數、滑麵塑性參數) 、滑床的彈塑性、以及極限平衡法無法考慮開挖應力釋放等因素對邊坡穩定性的影響與滑動面上的正應力、剪應力分佈規律、安全系數的解答的差異。
  9. This paper puts forward the main influence factors to calculate the error of the fractured rock mass permeability coefficient using the permeability tensor on the basis of analyzing the fractured rock mass permeability tensor formula, and also discusses their impact on the calculation result in detail

    作者在分析裂隙巖體滲透張量計算公式的基礎上,提出了利用滲透張量求取裂隙巖體滲透系數的誤差的主要影響因素,詳細論述了各因素對計算結果的影響。
  10. And the impact of every parameters of f - ved element, stiffness coefficient and damper coefficient of ved element, normal stiffness, tangent stiffness and sliding friction of frd element and the cross - section area of the brace on the capability of dissipating vibration energy is computed and analyzed

    並對f - ved單元中ved單元的剛度系數、阻尼系數、 frd的法向剛度、切向剛度、滑動摩擦力及支撐橫截面面積等參數對單元阻尼效果的影響進行了分析研究。
  11. This product has good - looking appearance, stable friction coefficient, low wear rate, and high mechanical impact strength, anti - rotary violence resistance strength, especially under high temperature has good anti - wear properties and stability in use

    該產品具有外觀美好,摩擦系數穩定,磨損率低及較高的抗機械沖擊強度,抗回轉暴烈強度等特點.特別在高溫穩定性和耐磨方面具有很好的使用特性
  12. Finally, being aimed at a certain machine model, a experiment research about the means of relief valve to reduce hydraulic impact is carried out, which prove the founded prove founded mathematics model. also, some pending coefficient are amended and the optimum pressure of relief valve is determined. at the same time, a experiment and emulation research about the means of accumulator to decrease hydraulic impact is carried put, in which the optimum pneumatic pressure and the optimum primitive capacity of accumulator were determined

    最後針對某一具體機型,對用溢流閥方式減小液壓沖擊進行了實驗研究,驗證了所建立的數學模型並修正了待定系數,確定了溢流閥的最優調定壓力;對用蓄能器方式減小液壓沖擊進行了實驗和模擬研究,確定了蓄能器的最優充氣壓力和最優初始容積。
  13. Then, we use a simulation method to create a large number of radar measurement values, produce a quantity of random numbers using computer software and add them to the radar measurement values, we use kallman filtering method to calculate the location, velocity and trajectory coefficient of the target at the moment of the final tracking point, and use the numerical solving method of differential equation to calculate the trajectory, the location of the hostile artillery or the impact point of its own projectiles, finally, we calculate statistically the random error of the tracking system and analyze the location accuracy

    然後採用模擬模擬方法獲得大量的雷達測量值,由計算機軟體產生大量的隨機數,加入雷達測量值中,用卡爾曼濾波法計算出最後跟蹤點時刻的目標位置、速度和彈道系數,再用微分方程數值解法計算出整個彈道軌跡、計算出敵方炮位的位置或己方炮彈的落點,最後統計出跟蹤系統的隨機誤差,分析定位精度。
  14. Study on impact coefficient of braking force for gravity piers of railway bridges with simple supported concrete beams

    重力式橋墩混凝土簡支梁橋制動力沖擊系數研究
  15. Raman fiber amplifier ( rfa ) is a kind of optical amplifier that can amplify signal light directly through nonlinear interaction of high intensity pump and signal light in fiber. whereas the spectrum of raman gain coefficient of optical fiber is not flat, the gain of signal light with different wavelength induced by a single pump is rather different, when wavelength division multiplexing ( wdm ) signal light is amplified by a single pump, the gain spectrum of the wdm signal light is not flat. the flatness of the wdm signal light has important impact on the optical signal - to - noise ratio ( osnr )

    拉曼光纖放大器( ramanfiberamplifier ,簡稱rfa )利用高強度的泵浦光與信號光在光纖中的非線性相互作用實現信號光的直接放大,但是由於光纖的拉曼增益系數譜很不平坦,所以同一泵浦光源對不同波長信號光的增益就存在很大的差別,因此,用單泵浦光源來放大波分復用( wavelengthdivisionmulti - plexing ,簡稱wdm )信號光時,各信號光的增益值就有很大差異, wdm信號增益的平坦度對光信噪比( opticalsignal - noiseratio ,簡稱osnr )有重要影響。
  16. Applying the matter - element analysis theory, and taking as the matter - elements the influence rank of the land use planning implementation on environment and the land use planning environmental impact assessment target and its the characteristic value, this paper appraises the ranks and processes the implementation data, obtaining classical territory, node territory, weight coefficient and related degree of the model

    摘要運用物元分析理論,將土地利用總體規劃實施對環境的影響等級、土地利用總體規劃環境影響評價的指標及其特徵值作為物元,通過對評價等級及規劃實施數據歸一化處理后,得到模型的經典域、節域、權系數及關聯度。
  17. In pulverized coal reburning experimental studies, simulation is made on the high temperature reburining zone in boiler. results show different kinds of coal, air excessive coefficient and temperature all have great impact on no deoxidized efficiency. how factors affecting no deoxidized efficiency under gas environment are discussed here and the importance of char reburning to deoxidize no in the whole coal is expatiated

    在對超細煤粉再燃的試驗研究中,運用一維爐及模擬煙氣成功模擬了鍋爐中的高溫再燃區,揭示了不同煤種、不同過量空氣系數、不同再燃區溫度等外部條件的變化下對超細煤粉和煤焦再燃還原no效率的影響的數據,確定了在煙氣環境下各種因素對煤粉煤焦再燃還原no效率的影響規律,並對煤焦異相還原no對整個煤粉還原no的貢獻進行了討論。
  18. The inherent frequency, mode, damp ratio and impact coefficient of the bridge were achieved by comparing the actual test results with the calculation results

    將實橋測試結果和計算分析結果進行了比較,並且獲得了大橋的固有頻率、模態、阻尼比和沖擊系數。
  19. The comfortable degree and impact coefficient of pedestrian passage bridge under moving vehicle load is studied in this thesis by ansys finite element procedure

    本文應用ansys有限元程序就二次預應力超薄梁組合結構在移動車輛荷載作用下行人過橋的舒適度和橋梁的沖擊系數兩個問題進行了研究。
  20. The bridge with box section possesses a better construction characteristics such as higher torsional rigidity and the better force property. 6. the accumulation of the measured impact coefficient can promote the adoption of the design impact coefficient, which is the basis of the safe run and test of the bridge

    武漢理工大學碩卜學位論文5 、箱形截面梁具有良好的結構性能,抗扭剛度大、受力性能合理,預應力連續箱梁橋結合了預應力連續梁橋和箱形梁的優點,較好地發揮了材料和結構性能的優勢。
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