Solid Expandable Tubular (SET) technology is a recent important breakthrough in petroleum exploration and drilling. The expansion forming theory and the constitutive model of the tubular materials are the theoretical basis for the development of this technology. This work focuses on establishing analytical and finite element models on the basis of the Twin Shear Stress (TSS) yield criterion to investigate the forming behavior of solid expandable tubular. The expansion force expression of the power exponential hardening material model was derived. A constitutive model using the TSS yield criterion and related flow rules was proposed and implemented into the ABAQUS software. Further to this, variations of the expansion forces, residual stresses and plastic deformation under different expansion ratios and friction coefficients were investigated. In addition, a tubular expansion experiment was conducted to validate the analytical and finite element solutions. Results show that the expansion force expression is reliable, but there are discrepancies within a reasonable range. The finite element model is capable of predicting the expansion forces, residual stress distributions, thickness reduction and length shortening accurately. Moreover, it is found that the expansion ratio should be controlled below 35% to avoid burst and collapse of the expandable tubular in practical application. For expansion operations, suitable lubrication conditions should be determined to ensure an acceptable expansion force and maintain a certain friction coefficient.

固态可膨胀管（SET）技术是石油勘探和钻探领域的一项最新重要突破。管状材料的膨胀成形理论和本构模型是该技术发展的理论基础。这项工作的重点是在双剪应力（TSS）屈服准则的基础上建立分析和有限元模型，以研究固态可膨胀管的成形行为。推导了幂指数硬化材料模型的膨胀力表达式。提出了使用TSS屈服准则和相关流规则的本构模型，并将其构建到ABAQUS软件中。此外，研究了在不同膨胀比和摩擦系数下的膨胀力，残余应力和塑性变形的变化。另外，进行了管状膨胀实验以验证分析和有限元解决方案。结果表明，膨胀力表达是可靠的，但在合理范围内存在差异。有限元模型能够准确预测膨胀力，残余应力分布，厚度减小和长度缩短。此外，发现在实际应用中应将膨胀率控制在35％以下以避免可膨胀管的破裂和塌陷。对于膨胀操作，应确定合适的润滑条件，以确保可接受的膨胀力并保持一定的摩擦系数。结果表明，膨胀力表达是可靠的，但在合理范围内存在差异。有限元模型能够准确预测膨胀力，残余应力分布，厚度减小和长度缩短。此外，发现在实际应用中应将膨胀率控制在35％以下以避免可膨胀管的破裂和塌陷。对于膨胀操作，应确定合适的润滑条件，以确保可接受的膨胀力并保持一定的摩擦系数。结果表明，膨胀力表达是可靠的，但在合理范围内存在差异。有限元模型能够准确预测膨胀力，残余应力分布，厚度减小和长度缩短。此外，发现在实际应用中应将膨胀率控制在35％以下以避免可膨胀管的破裂和塌陷。对于膨胀操作，应确定合适的润滑条件，以确保可接受的膨胀力并保持一定的摩擦系数。已经发现，在实际应用中，膨胀比应控制在35％以下，以避免可膨胀管的破裂和塌陷。对于膨胀操作，应确定合适的润滑条件，以确保可接受的膨胀力并保持一定的摩擦系数。已经发现，在实际应用中，膨胀比应控制在35％以下，以避免可膨胀管的破裂和塌陷。对于膨胀操作，应确定合适的润滑条件，以确保可接受的膨胀力并保持一定的摩擦系数。