Taking the construction project of the National Cybersecurity Talents and Innovation Base as an example,this paper studies the construction technology of freeform surface spatial bending-torsion steel structure based ...Taking the construction project of the National Cybersecurity Talents and Innovation Base as an example,this paper studies the construction technology of freeform surface spatial bending-torsion steel structure based on structural design model transformation,including the parametric modeling of deepening design model,computer-aided bending and torsion frame production,flexible docking in the bending-torsion combination unit,and welding stress deformation,in hope to provide reference for similar projects in the future.展开更多
The following paper describes a strategy for an adaptive reinforcement of additively manufactured objects.The described method aims in particular at the strengthening of geometrically complex objects which can be prod...The following paper describes a strategy for an adaptive reinforcement of additively manufactured objects.The described method aims in particular at the strengthening of geometrically complex objects which can be produced with the so-called powder bed method.The strengthening is carried out by a hardening liquid which is injected into cavities of an additively manufactured shaped object.In order to meet the requirements,the design of the cavities is carried out in a digital optimization process,which takes place before the printing procedure.Cavities filled with injection material act as reinforcement,which can be interlocked with the surrounding material in a force-fit and adhesive manner.The described approach uses the advantages of the powder bed process,which allows the production of shaped parts without significant geometrical restrictions to form tubular cavities.The comparatively high porosity,which is often cited as a weakness of the powder bed process,is also used to form a bond zone between the printed object and the reinforcement strand.The present study deals with basic principles necessary for the automatic control of the penetration depth and the injection process.The investigations are based on a selection of suitable materials.展开更多
基金The Hubei Provincial Building Technology Project in 2021(No.43)。
文摘Taking the construction project of the National Cybersecurity Talents and Innovation Base as an example,this paper studies the construction technology of freeform surface spatial bending-torsion steel structure based on structural design model transformation,including the parametric modeling of deepening design model,computer-aided bending and torsion frame production,flexible docking in the bending-torsion combination unit,and welding stress deformation,in hope to provide reference for similar projects in the future.
文摘The following paper describes a strategy for an adaptive reinforcement of additively manufactured objects.The described method aims in particular at the strengthening of geometrically complex objects which can be produced with the so-called powder bed method.The strengthening is carried out by a hardening liquid which is injected into cavities of an additively manufactured shaped object.In order to meet the requirements,the design of the cavities is carried out in a digital optimization process,which takes place before the printing procedure.Cavities filled with injection material act as reinforcement,which can be interlocked with the surrounding material in a force-fit and adhesive manner.The described approach uses the advantages of the powder bed process,which allows the production of shaped parts without significant geometrical restrictions to form tubular cavities.The comparatively high porosity,which is often cited as a weakness of the powder bed process,is also used to form a bond zone between the printed object and the reinforcement strand.The present study deals with basic principles necessary for the automatic control of the penetration depth and the injection process.The investigations are based on a selection of suitable materials.
