爆震值 的英文怎麼說
中文拼音 [bàozhènzhí]
爆震值
英文
knock value-
There are certain difficulties in studying the failure process of frangible materials such as concrete, rock, etc which are caused by dynamic loads such as collision, earthquake, exploding, etc by those current exited numerical methods like finite element method etc. so in order to solve such a problem we should introduce certain new numerical analysis method
現存的一些數值方法如有限元法等在研究混凝土、巖石等脆性材料在沖擊、爆破、地震等動荷載作用下的破壞過程問題中存在著一定的困難。因此，對於此類問題需要新的數值分析方法。The indirect answer to this question is simple ; the peak cylinder pressure is not allowed to exceed the mechanical limitation of the engine parts or the knock limit of the fuel, which ever comes first
婉轉的針對這個問題回答，汽缸壓力的峰值不能超過引擎機械零件本身的限制或汽油爆震的極限，以上兩個狀況何者先出現，就是極限的發生時機Numerical analysis of explosion seismic effect
爆破地震動效應的數值模擬分析The high - performance solution of sparse linear algebra equations is very important in solving many problems from science and engineering applications, including computational fluid, simulation and design of materials, data processing in oil exploitation and earthquake prediction, numerical forecast of weather, and numerical simulation of nuclear blast
稀疏線性代數方程組的高效求解是許多科學與工程計算的核心，如計算流體力學、材料模擬與設計、石油地震數據處理、數值天氣預報從核爆數值模擬等都離不開稀疏線性代數方程組的求解。Study on blasting vibration damage based on response spectrum
基於反應譜值分析的爆破震動破壞評估研究Based on the numerical simulation method of finite element, the calculation method of particle vibration velocity, an important index reflecting the blasting vibration intensity, is discussed ; and an comparison analysis of the calculation results between two different kinds of charge structures decked with air and water is made
基於有限元數值模擬方法的基礎上對反映爆破震動強度的重要指標質點振動速度的計算方法進行了探討，並對空氣和水兩種不同間隔裝藥結構下的震動強度計算結果進行了對比分析。The attenuation indexes of vertical direction components and level radial components of blast earthquake wave in the condition of far range are all larger than the one in the condition of close range. based on upwards analysises, relevant control ways and safety defending technology of blast vibration are given from the aspects of blast equipments, blast parameters, landform physiognomy, blast methods. and taking the practical data from blast scene as the sample, the blast shockproofness are forecasted by the feedforward nerve network model based on the prior knowledge of blast shockproofness, the regress analysis method and experience formula method, which supply the technology gist for
並且，以爆破現場的實測數據為樣本，採用基於爆破震動強度先驗知識的前饋網路神經模型、回歸分析法及經驗公式法分別對爆破震動強度進行了預測研究，為爆破施工參數的確定提供了技術依據，確保整個爆破工程順利安全進行，並對這三種方法的預測結果進行了對比分析;對比分析表明，三種預測方法計算出來的結果精度相差甚大，從檢驗樣本值與預測結果值之間的相對誤差可以看出，人工神經網路法預測的結果較其他方法更接近於實際值，回歸分析預測法的精度又要高於經驗公式預測法。In order to investigate the influence of characteristics parameters on detonation wave in a two - phase pulse detonation engine model. the peak detonation pressures and average velocities of two - phase pulsed detonation wave produced by pde model using gasoline as fuel and air as oxidizer under various ignition frequencies and various mixture ratios are measured systematically, and the relations influencing them are analyzed
為了探索氣-液兩相脈沖爆震發動機模型內特徵參數對產生爆震波的影響規律，系統地測試了以汽油為燃料、以空氣為氧化劑的氣-液兩相脈沖爆震發動機模型在不同點火頻率及不同余氣系數下爆震波的峰值壓力以及平均爆震波速，並對其變化進行了分析。At the conditions with the same fuel injection quantity per cycle and the same engine speed, with the increase of the additive mass fraction in the fuel, the ignition and heat release timings brought forward, the peak of heat release rate increased and the operating range at low engine load was enlarged obviously. however, excessive additives will make the engine be prone to knock, run rudely and shorten the operating range at high engine load
在相同循環噴油量和相同轉速的條件下，隨著添加劑質量分數的增加， hcci著火和燃燒放熱提前，燃燒放熱峰值提高，低負荷工況范圍明顯拓寬，但過高的添加劑質量分數會使得發動機爆震，工作粗暴，導致高負荷工況變窄。This paper confirms a kind of non - linear mapping relation between vibration velocity of particles on building and the influence factors, such as total explosive charge, maximum explosive charge fired at the same time, the distance between blasting point and monitoring points, peak particle velocity of ground where building is, the height from monitoring point to ground, and so on, and sets up a support vector machine ( svm ) model for forecasting the vibration effect induced by an explosion
應用支持向量機，建立了總藥量、最大段藥量、爆破點與監測點距離、構築物所在地面震動峰值速度、測點到地面的高度等因素與建築物上的質點震動速度之間的非線性映射關系，確立了支持向量機預測模型。However, if it knocks heavily under most driving conditions while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage
可是，在使用推薦的辛烷值燃油時，要是在大部分行駛條件下爆震嚴重，請找你的福特授權經銷商，避免任何對于發動機的損傷。The accelerometer can be used in aeronautics and astronautics, inertial navigation, seismic inspection and petroleum exploitation, etc., so the research on the laser accelerometer based on psd is significant
該加速度計可用於航空航天、慣性導航、武器引爆、汽車安全行駛、地震檢測和石油開采等多個領域，不僅具有重要的科學意義，更具有廣闊的應用價值。In fact, it is often difficult to fix these influence factors using accurate definite value because they are fuzzy. this paper sets up the membership function of the effect on blasting shaking to open - pit slope stability
但實際上，無論是影響邊坡穩定的內在因素和還是爆破震動的外在因素往往都難以用精確的定值確定，其本身具有模糊性。Numerical simulation on propagation process of detonation wave in detonation combustion chamber
爆震波在爆震燃燒室內傳播過程的數值模擬These have been developed by the numerical integration of the differential equations of gas motion for a spherical blast wave in air.
這些都是根據空中球形爆震波氣體運動的微分方程的數值積分得到的。Study on vibration peak values of charges simultaneous blasting seismic field and it ' s application of cutting in slopes
藥包群同時起爆地震場中振動峰值研究及其在邊坡開挖中的應用Through analyzing a lot of tested data of seismic waves from deep - hole blastings at a different angle, the changing rules and influence factors of such main parameters as frequency, amplitude and lasting - time of blasting seismic waves propagating in a rock medium are obtained, and the empiral formulas for calculating the amplitude of blasting seismic wave acceleration are fitted out by binary regression
通過從不同角度對大量的深孔爆破地震動測試數據的分析，得到了巖石中爆破地震波傳播的頻率、幅值和持續時間等主要參數的變化規律以及它們的影響因素，並通過二元回歸法，擬合出計算爆破地震波加速度幅值的經驗公式。分享友人