銆婂伐绋嬪姏瀛︺�嬬绾夸綔涓?/p>
1
锛夐敾閿ゅご瀵瑰伐浠舵墦鍑诲姏
P=1000kN
锛?/p>
鍋忓績璺?/p>
e=20mm
锛岄敜澶撮珮搴?/p>
h=200mm
锛岃瘯姹傞敜澶?/p>
鏂藉姞浜庝袱渚у杞ㄧ殑鍘嬪姏涓哄澶с�?/p>
瑙ｏ細鍙栭敜澶翠负鐮旂┒瀵硅薄锛岀敾鍙楀姏鍥?/p>
鏍规嵁閿ゅご鍙楀姏鐗瑰緛锛氶敾鍑诲姏
P
涓庨敾浠跺弽浣滅敤鍔涘ぇ灏忕浉绛夈�佹柟鍚戝悜鐩稿弽
P
1
鏋勬垚涓�涓姏
鍋讹紝姘村钩鍙楀姏浠呮湁涓や釜绾︽潫鍔?/p>
N
1
鍜?/p>
N
2
锛屽洜鑰屽杞ㄥ閿婚敜鐨勭害鏉熷姏
N
1
鍜?/p>
N
2
涔熷繀鏋勬垚涓�鍔?/p>
鍋朵笌涔嬪钩琛°�?/p>
鏍规嵁骞抽潰鍔涘伓绯诲钩琛″厖瑕佹潯浠跺緱锛?/p>
鈭?/p>
m=0, P
脳
e - N1
脳
h=0
鈭?/p>
N
1
=N
2
=P
脳
e
梅
h=1000
脳
20
梅
200=100(KN)
2
锛?/p>
鐢ㄩ噸鍔涗负
G=4kN
鐨勬墥鏉?/p>
AB
璧峰悐閲嶇墿
W=10kN
锛?/p>
鏉嗙殑
A
鐐瑰彲瑙嗕负閾伴摼锛?/p>
鍦?/p>
B
鐐圭郴
鏈夋媺缁虫媺璧烽噸鐗╋紝姹傚湪涓嬪浘鎵�绀虹殑浣嶇疆鏃剁殑鎷夊姏
T
鍜?/p>
A
鐐圭殑鍙嶅姏銆?/p>
瑙ｏ細瀵?/p>
A
鐐瑰彇鐭╁緱锛?/p>
T
脳
s-G
脳
h-W
脳
L=0
鍏朵腑
s
涓?/p>
A
鐐瑰埌
T
鐨勮窛绂伙紱
h
涓?/p>
A
鍒?/p>
G
鐨勮窛绂伙紱
L
涓?/p>
A
鍒?/p>
W
鐨勮窛绂汇�?/p>
鐢卞钩琛¤璇剧▼鍙緱锛?/p>
T脳
S=G脳
H+W脳
L
鍏朵腑锛?/p>
S=AB脳
sin30
0
=0.5AB h=0.5脳
AB脳
sin30
0
=0.25AB
L=AB脳
sin30
0
=0.5AB
N
1
N
2
P1