A system and method including modeling wellbore conditions and plug properties to predetermine the dissolution time of a plug under wellbore conditions for use in a well operation. The system and method provide an estimate of how long a dissolvable plug will remain viable based on its composition and the conditions in the wellbore. Once a plug has been selected or once wellbore conditions have been determined, the plug and/or conditions can be tested in the lab to confirm suitability prior to use downhole.

The disclosure presents processes for improving the design phase of plastic material lined tubular structures used downhole of a borehole. A plastic material lined tubular structure model is utilized for tubular structures that have a metal layer, a grout layer, and a plastic material layer. The model can use a modified wall thickness for the metal layer. A strength model can be applied to the modified critical dimensions, e.g., wall thickness parameters. A thermal model can be applied to the tubular structure to determine pressure and temperature parameters. The strength model and the thermal model outputs can be utilized by a stress analyzer to determine loads, safety factors, and design limit parameters. The plastic material lined tubular structure model can enable more efficient use of tubular structures, designing a longer operational lifetime, such as in acidic environments, or the use of thinner structures while maintaining a satisfactory operational lifetime.

A simulation method related with the opening force of a front vehicle door after a vehicle frontal collision including: a first simulation step in which deformations of vehicle components which are caused in the vehicle frontal collision to affect the opening of the front door are calculated by simulation; and a second simulation step in which the opening force of the front door after the vehicle frontal collision is predicted by simulation; wherein the components which affect the opening of the front door include a design component and an interface component, the deformations of the design component and the interface component obtained in the first simulation step being used as initial geometric conditions of the design component and the interface component in the second simulation step.

A system and method is disclosed for predicting and comparing wear scenarios in a rail system. The method can include generating and running a contact model of the interaction between a rail and a train car to produce a simulated loading on the rail for a predetermined time period; generating and running a wear model based on the material properties and/or friction modifier properties of the rail using the simulated loading to produce a simulated wear profile of the rail for the predetermined time period; obtaining a grinding profile to be performed on the rail during the predetermined time period; and generating an updated rail profile by modifying the rail profile by the simulated wear profile and the grinding profile. The method can predict and compare crack growth over time, and provide a financial model and comparison of costs and benefits for different maintenance protocols for the rail system.

The present invention provides a material-based subdomain hybrid cellular automata algorithm for solving material optimization of thin-walled frame structures, including an outer loop and an inner loop: the outer loop is to define and update the target cost for the inner loop; the inner loop is to adjust material using a PID control strategy according to the nominal flow stress of a current cell and the nominal flow stress of candidate materials, so that a current cost of the inner loop converges to the target cost. During the execution of the inner loop, the cellular material update rule based on the PID control strategy is employed to update cellular material, to define the candidate material library and the nominal flow stress, to update the nominal flow stress of current cell, to compare the nominal flow stress with the actual flow stress of each material in the candidate material library, to select the candidate material closest to the nominal flow stress as the selected material grade for the current cell and to replace the material parameters of the current cell with the mechanical parameters of the selected material. The present invention can efficiently solve nonlinear the dynamic response optimization problems containing a large number of material variables, significantly improving the robustness of the algorithm.

A method of generating a three-dimensional product having a cubic internal structure in a process controlled by a computing device. The method comprises receiving a manufacturing request datum from a user client device, wherein the manufacturing request datum further comprises at least an element of a product definition. The method further comprises defining a lattice volume of the manufacturing request datum, wherein defining the at least a lattice volume further comprises defining at least a lattice cell, wherein the at least a lattice cell is comprised within the lattice volume. The method further comprises determining a response characteristic of each lattice cell of the plurality of lattice cells, wherein determining a response characteristic further comprises simulating the application of at least a force on at least a part of the manufacturing request datum as a function of the product definition. The method further comprises selecting a unit structure.

The invention relates to a system for joining two components or for reinforcing a component, comprising a first and a second threaded sleeve which each comprise the following: an outer thread, with the aid of which the threaded sleeve can be screwed into the respective component and which is suitable to form a composite with the respective component, and a power drive, by which a torque for screwing the threaded sleeve into the respective component can be transmitted to the threaded sleeve. The system further comprises an elongate clamping element which is suitable to be guided through the second threaded sleeve and introduced into or guided through the first threaded sleeve, and which is suitable to axially clamp the first and the second threaded sleeve in such a manner that the first and the second threaded sleeve form opposed composite stresses in the respective component.

Method for predicting a stability of a steel cylinder including: in response to the steel cylinder tilting toward a seaward side at an arbitrary rotation point, obtaining a safety factor for the steel cylinder tilting toward the seaward side by determining an anti-tilt moment and a tilt moment when the steel cylinder is tilted to the seaward side; under a same rotation point, in response to determining that the steel cylinder is rotated toward a land side, determining the safety factor for the steel cylinder tilting toward the land side; taking a smaller safety factor as the safety factor under the rotation point; re-selecting a new rotation point, determining a safety factor corresponding to the new rotation point, and taking a safety factor with a smallest value among all rotation points as a final safety factor; and generating, based on the final safety factor, an anti-tilt instruction.

A model representing a physical object is received. The model contains a pilot node, one or more surface nodes, and a constraint for coupling displacements/movements of the pilot node with the one or more surface nodes via a set of constraint equations. The pilot node is subject to a condition that restricts node swapping for resolving node dependency in elimination method. An internal node is created based on the pilot node. The internal node and the pilot node occupy a same location initially. The internal node and the one or more surface nodes are constrained via the set of constraint equations. The model is modified with the internal node and a numerical spring connecting the pilot node and the internal node. The numerical spring is configured for limiting relative movements between the pilot node and the internal node. Physical behaviors of the physical object are simulated using the modified model.

An integral reinforcement design method of an external frame-brace based on a random capability spectrum is provided, and the reinforcement design method includes: evaluating an original structure before reinforcement by using a random capability spectrum method; performing a reinforcement analysis on an external frame-brace sub structure by using the random capability spectrum method to obtain a reinforced structure; and performing a reinforcement verification on the reinforced structure by using the random capability spectrum method. A performance based integral reinforcement design of the external frame-brace sub structure is achieved through considering uncertain factors, as well as capability spectrums and demand spectrums before and after the reinforcement, and converting the integral structure to equivalent single degree of freedom to obtain performance points.