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      1. Ϻųţ޹˾

        English

        Ϻųţ޹˾

        ժҪͨ꾮÷ƣоһ÷ʧЧҪ ANSYS/LS—DYNA ÷άʵģģ̳ⷧĹõֲͼݴ˷ѭӦԱ÷ƣƻӰ÷ؿڽغӦжԼٱ÷ʧЧΣ˱÷޳ݱ÷ƣԱ÷ʹйһֱ÷ṹĽ·һ̶ЧӦӳ÷ʹҪʵüֵ

        ؼʣ꾮÷ѭӦӦƣ

        ÷꾮õĹؼ֮һƺûֱӰ쵽õĹܺʹһҪ߱÷ӴͳʴͱȻҪӽӴıӲӲȹֻͳһҪ߲Ͽغɵͱ뱣֤нϸߵӦӲֻӰܱ÷ۺܺڲͬܲͬʱұ÷ļӹɱҲӦо÷ʧЧԱ÷Ҫָ

        һ꾮÷ʧЧԭгƣƻͳʴĥĥҺĥĥȻͨԿ󳡱ϵ꾮÷ۺ΢òƣƻDZ÷ʧЧҪڱ÷ʱҪص㿼DZ÷ϵĿƣܼľֲӦ״̬ȷƣǿ

        ݱ÷ڹرս׶εļģͺͱ÷̵Ԫѧģصо÷ʱ뷧ӴϲӦвλʽ̶ͨ÷ƣ߶ӦƣУӶ÷ʹƣԱ÷ΪͨĽ÷ĽṹԽͷֵӦΪЧñ÷Է

        1 ÷Ӧ

        Ż˶̶ԷЪ÷ܳغӴӦɱպ˲䵽Ӧٵ÷ʱѭ϶÷ѭӦ

        ڱ÷رս׶εļģٶںСͺ߶ȼ˶ֱرݴģ÷رʱ̷̵ٶȺͼٶ

        ʹõ 7# Ϊѡȡ׶Ϊ 45°׶Ϊ׶ĸ֮ļнǣ趨ʱתφ=25°Ϊ 120 ΣminѹΪ 15MPaתφ=25°~180°֮꾮÷ȷ΢ֵַ̽õ̵ͺ߶Ϊ 0.0056mڴ˴ٶΪ0.4067m/s2üģ÷رʱ̷̵ٶΪ19.3676m/sٶΪ33476.65m/s2

        Լģ͵õĹرʱ̷̵ٶȺͼٶΪ˶߽ ANSYS/LS—DYNA ÷άģģ̳ⷧĹ÷ʵʳߴ罨÷ģʡܷȦ겢÷ʵʹòԼԼ 8 嵥Ԫ񻯻ģͼͼ l ʾ

        꾮÷ͼ1
        ͼ 1 ÷άģͼ

        Ӧöѧ۷ײӴõ׶ 45 °7 #ڱպϽ׶βֲӦʱӦֲͼͼ 2

        꾮÷ͼ2
        ͼ 2 Ӧֲͼ

        ͼ 2 õڳĹֲӦΪ 0.955×109PaӶ֪÷׶¶Ӧܵѭغ 0.955×109PaΪ 0.5s÷ijΪ 120 Σmin)ͼ 3

        꾮÷ͼ3
        ͼ 3 ׶¶Ӧʽ

        ѭӦ׶¶Ӧγƣʹ÷ƣǿһ뷧ʧЧĺò׶²ԱεȫǺɼ÷ʱӦijƣDZ÷ʧЧҪԭ

        IJάʵģʹеĶάƽģͶغʩӵṹģ͵ضزģʵײ ANSY/LS—DYNA ԪʽԶõӾȷӦҶӦֲķλиֱ۵ʶ

        2 ÷ϵS-N

        꾮÷Ϲ㷺40Cr40CrͺϽ̼ṹʴпԺƣǿȸȱԵ³ѧܼ1

        1 ÷40Crֵʴ̬ѧ
        σb/MPa σ0.2/MPa δs/ ψ
        1080
        950
        18.0
        58.0

        ׸ 40Cr ֹ⻬ 105~1010 ѭܴηΧڵƣS-Nͼ 4 ʾ

        꾮÷ͼ4
        ͼ4 40CrS-N

        105~108ܴηΧƣ߿ Basquin ʽ

        꾮÷ʽ1

        ʽσa——ƣغӦ
        Nf——σa·ƣƻʱغѭܴ
        σ'f——ƣǿϵ
        b——ƣǿָ Basquin ָ

        ʵϵõ 40Cr S-N ߵ Basquin Ϊ

        σa¹=2431×2Nf-0.0998 2

        ʽ σa¹——ԳѭƣغӦ

        ڶԳѭ£

        σ-1a¹ 3

        ʽ σ-1——ԳѭӦ

        ʽ3ʽ2õ 40Cr ֵĶԳѭӦӦ·ƣƻʱѭܴ֮Ĺϵʽ

        σ-1=2431×2Nf-0.0998 4

        ʽ4ɵ 40Cr ƣͼͼͼ5ʾ

        꾮÷ͼ5
        ͼ 5 ƣͼͼ

        3 ÷ƣ

        Peterson ݴʵõ¶ܽغɻеĽӦƽӦϻеܹϵķ̣

        꾮÷ʽ2

        ʽ σa——Ӧ
        σm——ƽӦ
        σb——Ͽǿ

        ڲͬԳѭӦσm=0ʽ5ãσa-1϶ԳѭӦѭѭӦ σ0ѭƣغӦ σa0ƽӦ σm֮ϵʽΪ

        꾮÷ʽ3

        ʽ5пɵòͬһӦѭӦԳѭӦĹϵʽΪ

        꾮÷ʽ4

        ʽ σ0——ѭӦ

        ʽ4ʽ7ɵòϷƣƻʱѭܴӦѭӦĹϵʽ

        꾮÷ʽ5

        Ӷõ÷ѭӦµƣͼ6

        꾮÷ͼ6
        ͼ 6 ÷ƣͼ

        4 ÷

        ڳĹֲ0.955×109Paݱ÷ƣӦѭܴΪ 2.1×105÷ʹԼΪ 25h~30hϼģʱʵʹдڵ˵óĽʵʱ÷гֶط£

        һڱ÷رս׶μģͺͱ÷ԪѧģΪڸ߶ 5.6mmǿѹƶӶȫˮĦ͵Ħڴ˽׶ηƽⷽʱٶٶȱʵµٶٶȴʵʹ̴λõ뷧Ӵʱ伫˶·ҺܵѹԳܣܶϷҺֻϡܶȼҺɳܵĵطϡĵطڿ˶ķϷҺϡ·ҺͻἫƹϷܵҺһγĵطҺ˶ѹǿһСڿ˶ķ·ܵҺѹǿԶԶϷѹǿѹǿԷ̲һϵйΪ˶ķܵĦҪĦöʱ

        һ ANSYS ģʱҲδܷȦĻܷȦ׶׶һ뷧̣׶ͬǰͻڷ׶ʱܷȦ뷧ӴԷ뷧֮ĸԽӴ𻺳ͬʱܷȦ뷧Ӵڷ뷧ܷ֮Һڷ뷧δӴ֮ǰڽγ“Һ”ӶԼٷرʱij

        Ϸ֪ģļӦʵһΪʹӽʵڸģӦٳһʵͻۼϵϵͨʵóۼϵΪφfۼϵΪφtۼϵφφf×φtʵӦσ=φ×σ@σ@ΪӦȻձ÷ƣͼñ÷ʹҪǿӦóı÷һİȫΪֳԱʱ÷ṩο

        5 ÷ĸĽʩ

        ͼ 2 ϿԿ׶DzλֳӦԭҪǷ뷧պʱ׶뷧Ӵܳغ׶ 뷧̵ײɴṹߴ缱仯ӦӦʹֲӦֵ˲ϰԤܳܵӦˮƽɴƣԴϵӦнϴļǸоչԱ÷Ҫ׶뷧̵ײĽڱ÷ṹܲΪ˼ӦΪԲ׶ԲɣʱԲ뾶Ϊ 88.54mm÷Ľǰͼͼ 6 ʾ

        ԸĽı÷ ANSYS/LS—DYNA ά̬ģģͼͼ 7

        꾮÷ͼ7
        ͼ 7 ÷Ľǰṹͼ

        õڱպϽ׶βֲӦʱӦֲͼͼ 8

        꾮÷ͼ8
        ͼ 8 Ľ÷άģͼ

        ͼ 8 ֲ֪Ӧ׶ƫϷΪ 0.834×109Paԭ÷ܵӦ 0.955×109Pa С 12.67Ӧ÷ƣͼ 6õ÷Ϊ 210h~320hṹĽ÷

        Ľķ˶ʱЧؼСˮĦĥʶԵײ׶ijʴĥڷʱܷЧҲ

        6

        1 ANSYS/LS—DYNA Է̳άʵ嶯̬ģõб÷ֲӦʱӦֲͼ׶ǴӦеʽ̶

        2꾮÷ijƣƻͨ÷ڶԳѭӦµƣͼõ÷ѭغµƣݴУɱ÷رս׶μģͺͱ÷ԪѧģӦ÷ʹ

        3һֿɽӦеı÷ṹĽӸϼ÷ijƣƻָ÷һӳ÷ʹһIJοֵ


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