PROBLEM TO BE SOLVED: To provide a front part shape evaluation device of a movable body capable of evaluating quantitatively whether or not there is room for further improvement in the front part shape of the movable body, and a program of evaluating its front part shape.SOLUTION: A front part shape evaluation device 4 evaluates reduction performance of a microbarometric wave due to a shape of a train head portion as an evaluation object. An evaluation index value calculation part 5 calculates an evaluation index value η on the basis of the maximum pressure slope value (δp/δt)of a compressive wave due to a train as an evaluation object and the maximum pressure slope value (δp/δt)of a compressive wave due to the optimal train disclosed by the acoustic theory. A front part shape evaluation part 6 evaluates whether or not there is room for improvement in the shape of the train head portion as an evaluation object on the basis of the evaluation index value η as an index when evaluating whether or not there is room for improvement in the shape of the train head portion. The front part shape evaluation part 6, for example, evaluates that there is no room for further improvement in the shape of the train head portion as an evaluation object when the evaluation index value η is a value near to 1.SELECTED DRAWING: Figure 2

    【課題】移動体の前部形状にさらなる改良の余地があるか否かを定量的に評価することができる移動体の前部形状評価装置とその前部形状評価プログラムを提供する。【解決手段】前部形状評価装置4は、評価対象の列車先頭部形状による微気圧波の低減性能を評価する。評価指標値演算部5は、評価対象の列車による圧縮波の圧力勾配最大値(∂p/∂t)maxと、音響理論によって明らかにした最適な列車による圧縮波の圧力勾配最大値(∂p/∂t)max,optとに基づいて、評価指標値ηを演算する。前部形状評価部6は、列車先頭部形状に改良の余地があるか否かを評価するときに指標となる評価指標値ηに基づいて、評価対象の列車先頭部形状の改良の余地の有無を評価する。前部形状評価部6は、例えば、評価指標値ηが1に近い値であるときには評価対象の列車先頭部形状にこれ以上の改良の余地はないと評価する。【選択図】図2


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    Titel :

    FRONT PART SHAPE EVALUATION DEVICE OF MOVABLE BODY AND PROGRAM OF EVALUATING ITS FRONT PART SHAPE


    Weitere Titelangaben:

    移動体の前部形状評価装置とその前部形状評価プログラム


    Beteiligte:
    MIYAJI TOKUZO (Autor:in)

    Erscheinungsdatum :

    2018-05-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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