CAJ | 학술논문

以?194×10型膨胀管为例，利用ABAQUS软件对30组不同膨胀锥斜面角度的模型进行了分析。研究了膨胀锥斜面角度与膨胀管膨胀后的壁厚、缩短率和内径扩大率以及最大膨胀压力之间的变化规律。研究结果表明，膨胀压力与锥体斜面角度呈现先减小后增大的趋势，且角度越大，压力波动越大。膨胀后管体的壁厚减薄率随着锥体斜面角度的变化规律为：1°～24°时随着角度的增大而明显增大；25°～30°时随着角度的变化，膨胀管壁厚减薄率变化不明显。膨胀管内径扩大率与膨胀锥斜面角度之间呈非线性关系。在1°～24°之间时，随着锥体斜面角度的增大，内径扩大率逐渐增大；在25°～30°之间时，随着角度的增大，内径扩大率并不明显。锥体斜面角度为1°和2°时，内径扩大率为负值。最后通过现场试验，验证了计算结果的合理性。
이?194×10형팽창관위례，이용ABAQUS연건대30조불동팽창추사면각도적모형진행료분석。연구료팽창추사면각도여팽창관팽창후적벽후、축단솔화내경확대솔이급최대팽창압력지간적변화규률。연구결과표명，팽창압력여추체사면각도정현선감소후증대적추세，차각도월대，압력파동월대。팽창후관체적벽후감박솔수착추체사면각도적변화규률위：1°～24°시수착각도적증대이명현증대；25°～30°시수착각도적변화，팽창관벽후감박솔변화불명현。팽창관내경확대솔여팽창추사면각도지간정비선성관계。재1°～24°지간시，수착추체사면각도적증대，내경확대솔축점증대；재25°～30°지간시，수착각도적증대，내경확대솔병불명현。추체사면각도위1°화2°시，내경확대솔위부치。최후통과현장시험，험증료계산결과적합이성。
Case study has been conducted on the ?194 × 10 type solid expandable tubular by using ABAQUS to analyze 30 sets of models with different expanding cone slope angle?The effects of the expanding cone slope angle on the expanded solid expandable tubular wall thickness, length reduction rate, inner diameter expansion rate and the maximum expansion pressure are analyzed?The results show that, with the increase of cone slope angle, the expansion pressure increases first but then decreases?The larger the cone slope angle, the greater the pressure fluc?tuates?The effect of cone slope angle on the wall thickness reduction rate is that, the wall thickness reduction rate first increases significantly ( with the cone slope angle in the range of 1° ~ 24°) but then keep steady ( with the cone slope angle in the range of 25° ~ 30°) ?The cone slope angle has a nonlinear relationship with the inner tu?bular diameter expansion rate?Also, the inner tubular diameter expansion rate first increases significantly ( with the cone slope angle in the range of 1° ~ 24°) but then keep steady ( with the cone slope angle in the range of 25° ~30°) ?The inner tubular diameter expansion rate has the negative values with the cone slope angle of 1° and 2°?Fi?nally, the reasonableness of the calculated results is verified by the field tests.