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鍏徃浠嬬垂鎮ㄧ暥(d膩ng)鍓嶆墍鍦ㄤ綅缃細棣栭爜>>鎶�琛�(sh霉)鏂囨憳鐎忚姝ｆ枃
閶侀憚杌嬫(j墨)涓粙杓ヨ桓鎵跨殑宸ヤ綔鐗归粸(di菐n)
鏇存柊鏅�(sh铆)闁擄細2019-08-27 00:46:26 渚嗘簮:绁炲伐姗�(j墨)姊� 榛�(di菐n)鎿婃暩(sh霉)锛�
杌嬭讥杌告壙鐢ㄤ締鏀拹杞�(zhu菐n)鍕�(d貌ng)鐨勮粙杓�锛屼繚鎸佽粙杓ュ湪姗�(j墨)鏋朵腑鐨勬纰轰綅缃紝骞舵壙鍙楃敱杌嬭讥鍌抽仦渚嗙殑杌嬪埗鍔�锛屽叾涓昏鐗归粸(di菐n)濡備笅锛�
锛�1锛� 鎵垮彈寰堥珮鐨勫柈浣嶅鍔� 鐢变簬杌嬭讥杌告壙鐨勫鍦嶅昂瀵稿彈鍒版(j墨)鏋剁獥鍙ｅ拰杌嬭讥杓ュ緫灏哄鐨勯檺鍒�锛岃�岃純鐭殑杌嬭讥杓ラ牳鍙堝繀闋堥噰鐢ㄥ緢澶х殑瑷辩敤褰庢洸鎳�(y墨ng)鍔涳紝鎵�浠ヨ粙杌告壙鐨勫柈浣嶅鍔涘緢楂�锛岀偤鏅�氳桓鎵垮厑瑷卞柈浣嶅鍔涚殑2~5鍊嶃��
渚嬪锛屽皪浜庨枊寮忔粦鍕�(d貌ng)杌告壙锛屼綔鐢ㄤ簬鍏惰桓鐡︽姇褰遍潰涓婄殑鍠綅澹撳姏锛屽彲浠ユ牴鎿�(j霉)杓ラ牳涓婄殑瑷辩敤褰庢洸鎳�(y墨ng)鍔涚敱浠ヤ笅闂�(gu膩n)绯诲紡寰梔3
p=σ×0.1d3bl2
寮忎腑l(w猫i)鍜宐——杌哥摝鐨勯暦搴﹀拰瀵害锛�
d——杌嬭讥杓ラ牳鐩村緫锛�σ——杌嬭讥杓ラ牳涓婄殑瑷辩敤褰庢洸鎳�(y墨ng)鍔�銆�
瑷�(sh猫)b=0.8d锛宭=锛�0.8~1.2锛塪锛屽墖灏嶄簬閶艰粙杓�锛屽湪瑷辩敤鍔�σ=120MPa鏅�(sh铆)锛岃桓鎵夸笂鐨勫柈浣嶅鍔涚偤
P=21~47MPa
鐣�(d膩ng)杌嬭讥杓ラ牳鍦撳懆閫熷害v=2~5m/s鏅�(sh铆)锛岃垏鍏剁浉鎳�(y墨ng)鐨刾v鍊肩偤
Pv=42~235MPa·m/s
閫氬父锛屽湪鏅�氳桓鎵夸笂锛宲≪9MPa鍜宲v≪10MPa·m/s銆傚洜姝�锛岃粙杓ヨ桓鎵跨殑鍠綅澹撳姏鏄櫘閫氳桓鎵跨殑2~5鍊嶏紝鑰宲v鍊兼槸鏅�氳桓鎵跨殑4~24鍊�銆�
锛�2锛夎粙杓ヨ桓鎵胯閫�(j矛n)琛屼汉宸ュ喎鍗� 杌嬭讥杌告壙鐢变簬鏈夊緢楂樼殑pv鍊�锛岃�岀敘(ch菐n)鐢熷緢澶х殑鐔遍噺锛屽洜姝ゅ湪宸ヤ綔涓閫�(j矛n)琛屼汉宸ュ喎鍗�銆傛牴鎿�(j霉)杌告壙鐨勭祼(ji茅)妲�(g貌u)锛屾垨鍦ㄨ粙杓ヨ讥闋镐笂婢嗘按锛屾垨鐢ㄥ挤(qi谩ng)鍔涚殑寰挵(hu谩n)娌归仈(d谩)鍒颁汉宸ュ喎鍗�銆�
锛�3锛夊伐浣滄浠舵儭鍔� 闄や簡楂樿矤(f霉)鑽峰锛岃粙杓ヨ桓鎵挎棦瑕佹壙鍙楅珮婧�锛屽悓鏅�(sh铆)鍙堥爤鐢ㄦ按鍐峰嵒锛屽洜姝ゆ韩搴﹀緢涓嶇┅(w臎n)瀹�銆傝�屼笖姹℃按锛屾哀鍖栭惖鐨拰濉靛湡绛夊鏄撹惤鍏�锛屾饯婊戜篃杓冨洶闆�銆傚湪鏌愪簺杌嬫(j墨)涓�锛屽鐤婅粙钖勬澘杌嬫(j墨)锛岃粙杓ヨ桓鎵跨殑宸ヤ綔婧害楂橀仈(d谩)300°C鐢氳嚦鏇撮珮銆�
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