砰擊力 的英文怎麼說
中文拼音 [pēngjīlì]
砰擊力
英文
slamming force-
The main problem in slamming research is to seek the relations among press, ship type and speed
底部砰擊研究中最基本的問題之一是尋求壓力、船型及速度三者之間的關系。How to compute the slamming press of ship bow in waves is a complex problem which is not settled completely till now. it involves the dynamic features among air, fluid and structure
如何計算在波浪中運動的船舶底部的砰擊壓力，這是個相當復雜的問題，至今尚未能很好地解決，它涉及到空氣-流體-結構三者之間的動力特徵。Since kamen and vagena, many researchers have discussed it in theory and experiment method. the main content in this paper is to set forth the slamming press calculations in dnv rules, gl rules and lr rules and the requirements for slamming strengthened bow structure and some comparisons ; slamming strengthened bow structure design for a bulk is carried out using dnv rules, and comparisons among several design schemes is carried through when heavy loading draft status replaces light loading draft status in practice. the results from above have been applied in ship production ; it is significant for ship structure improvement latter to calculate slamming press with direct calculation method, and then to design bow structure with dnv rules
本文的主要內容是分別闡述dnv 、 gl 、 lr三種規范對底部砰擊壓力計算及底部砰擊加強結構設計的一般要求並進行一些分析比較：用dnv規范對某型船（ 27000t散貨船）進行具體的底部砰擊加強結構設計，並就實際生產中產生的重載吃水狀態改輕載吃水狀態而出現的幾種設計方案進行比較，其具體結果現已用於實際生產；用直接計演算法確定砰擊壓力，再用dnv規范進行底部結構設計，對於後續船的改進均有指導意義。From this thesis, it can be stated that the use of observation implement and active cable can produce timely active control to ship in the wave. because active cable can enhance ship ' s ability of anti - siamming but do n ' t affect ship ' s inward capability, it should be given some attention in the application research of active control method in ship structure vibration by slamming
從本文中可以看出，將觀測器和作動器相結合可以對航行於波浪中的船舶結構振動實施適時的主動控制，並且裝上作動器不但不會影響船體本來的性能，而且可以增加其抗波浪砰擊能力，因此主動控制方法在船舶結構砰擊響應控制方面的應用和研究應該給予一定的重視。For this reason, the following problems are researched emphatically : firstly, the long - term prediction method for calculating the extreme values of slamming pressure is founded. the effects of sea conditions, ship speeds, traveling directions, loading conditions on the results of long - term prediction are studied. on this basis, the computing process is simplified rationally, so as to this method can be used in practical engineering computations
為此，本文主要在下面幾個方面進行了探索：首先，建立了底板砰擊極值壓力的長期預報方法，通過分析海況、航速、航向角、裝載狀態等不同的影響，合理簡化了長期預報的計算過程。Solution of nonlinear wave loads in regular oblique seas. based on strip method, thinking about nonlinear factors such as no straight shipboard on waterline, the instantaneous variation of wet surface shape and slamming effect of ship bottom, the numerical methods of nonlinear fluid force in large amplitude oblique regular seas are discussed
關于斜浪規則波中非線性波浪載荷的計算:本文基於切片理論，考慮到船體非直舷、水下剖面形狀的瞬時變化以及砰擊等非線性因素，討論了大波幅斜浪規則波中非線性流體力的時域計算方法。Based on the above work, the calculation formulae of nominal slamming pressure and the bearing capability of the bottom plates in the rules are modified, and the safety coefficients are evaluated referring to the target reliability specification, then the more reasonable formula of assessing the slamming strength of bottom of the bow is given
在上述工作的基礎上，對我國建造規范中原有的砰擊壓力名義值和底板承載能力名義值的計算公式進行了修正，並參照選定的目標可靠性指標求出了安全系數，給出了更為科學合理的船首底部砰擊強度定值評定公式。At this instant, bottom plates experience large slamming pressure, which can damage bottom plates. the major content of this thesis is to calculate slamming pressures and ultimate bearing capacities more rationally by probabilistic analysis method, and to estimate the safety by reliability analysis method
本文的主要內容就是在考慮各種不確定性因素影響的情況下，用概率分析的方法較為合理地計算作用在底板上的砰擊壓力和底板極限承載能力，並用可靠性方法合理評定底板的安全性。分享友人