CAJ | 학술논문

通过有限元分析方法，以 DN 1200 mm×1000 mm 拔制异径三通为例，计算分析了拔制三通 C 值对三通各关键受力部位及三通爆破压力的影响。分析计算结果表明，①当 C 值小于当前规范给定值时，增加三通 C 值能有效减小三通肩部、腹部的应力，三通的爆破压力增加也比较明显。②当 C 值大于规范给定值时，C 值的变化对各部位的应力影响变小，不能有效提高三通爆破压力。③在目前各规范规定 C 值的基础上，如再增加 C 值不能有效提高拔制三通的强度。
통과유한원분석방법，이 DN 1200 mm×1000 mm 발제이경삼통위례，계산분석료발제삼통 C 치대삼통각관건수력부위급삼통폭파압력적영향。분석계산결과표명，①당 C 치소우당전규범급정치시，증가삼통 C 치능유효감소삼통견부、복부적응력，삼통적폭파압력증가야비교명현。②당 C 치대우규범급정치시，C 치적변화대각부위적응력영향변소，불능유효제고삼통폭파압력。③재목전각규범규정 C 치적기출상，여재증가 C 치불능유효제고발제삼통적강도。
Through the finite element analysis method,the DN1 200 mm×1 000 mm extruded tee is taken as an example,the impact on the stress of the main parts and bursting pressure of the extruded tee while C value increases are calculated.The results show that,when the C value is less than the current specification given value,the stress by increasing the C value can be effec-tively reduced,and the bursting pressure increases obviously,but when the C value is greater than the specification given value,it is unable to effectively enhance the bursting pressure by in-creasing the C value.So by increasing the C value basis on the specified value,the strength of ex-truded tee could not be effectively improved.