涓汉鏀堕泦鏁寸悊
鍕垮仛鍟嗕笟鐢ㄩ�?/p>
1 / 72
宸ョ▼鍔涘鏉愭枡鍔涘
锛堝寳浜鎶�澶у涓庝笢鍖楀ぇ瀛︼級
绗竴绔?/p>
杞村悜鎷変几鍜屽帇缂?/p>
1-1
锛氱敤鎴潰娉曟眰涓嬪垪鍚勬潌鎸囧畾鎴潰鐨勫唴鍔?/p>
瑙ｏ細
(a):N
1
=0,N
2
=N
3
=P
(b):N
1
=N
2
=2kN
(c):N
1
=P,N
2
=2P,N
3
= -P
(d):N
1
=-2P,N
2
=P
(e):N
1
= -50N,N
2
= -90N
(f):N
1
=0.896P,N
2
=-0.732P
娉紙杞村悜鎷変几涓烘锛屽帇缂╀负璐燂級
1-2
锛氶珮鐐夎鏂欏櫒涓殑澶ч挓鎷夋潌濡傚浘
a
鎵�绀猴紝鎷夋潌涓嬬浠ヨ繛鎺ユ涓庡ぇ閽熻繛鎺ワ紝杩炴帴澶勬媺鏉嗙殑
妯埅闈㈠鍥?/p>
b
鎵�绀猴紱鎷夋潌涓婄铻虹汗鐨勫唴
寰?/p>
d=175mm
銆備互鐭ヤ綔鐢ㄤ簬鎷夋潌涓婄殑闈欐媺鍔?/p>
P=850kN
锛岃瘯璁＄畻澶ч挓鎷夋潌鐨勬渶澶ч潤搴斿姏銆?/p>
瑙ｏ細
蟽
1
=
=35.3Mpa
蟽
2
= =30.4MPa
鈭?/p>
蟽
max
=35.3Mpa
1-3
锛氳瘯璁＄畻鍥?/p>
a
鎵�绀洪挗姘村寘鍚婃潌鐨勬渶澶у簲鍔涖�備互鐭ラ挗姘村寘鍙婂叾鎵�鐩涢挗姘村叡閲?/p>
90kN
锛屽悐鏉嗙殑
灏哄濡傚浘
b
鎵�绀恒�?/p>
瑙ｏ細
涓嬬铻哄瓟鎴潰锛?/p>
蟽
1
=
=15.4Mpa