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Local loading forming-based optimization method for preformed blank of rib plate part

A technology of local loading and optimization method, which is applied in the field of hot forging and can solve problems such as folding and dissatisfaction of rib cavity filling

Active Publication Date: 2017-07-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0006] In order to overcome the problems of folding and insufficient filling of the rib cavity in the existing technology in the local loading forming of ribbed parts, the present invention proposes an optimization method for forming ribbed part preforms based on local loading

Method used

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  • Local loading forming-based optimization method for preformed blank of rib plate part
  • Local loading forming-based optimization method for preformed blank of rib plate part
  • Local loading forming-based optimization method for preformed blank of rib plate part

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Embodiment Construction

[0071] In this embodiment, based on the finite element simulation, a TA15 titanium alloy rib plate is formed by using the isothermal local loading method, and the shape of the preform in the transition zone is optimally designed. Then, the resulting optimized preforms were verified using physical experiments. The specific process is:

[0072] Step 1, extract the geometric structure of the transition zone.

[0073] Sun Zhichao et al. published "Study on Local Loading Partitions in Isothermal Forming of Titanium Alloy Integral Frames" published in Journal of Plastic Engineering, 2009, Volume 16, Issue 1, Pages 138-143. The effect of the loaded zone on the formed unloaded zone is a short-range effect, and its influence range is mainly concentrated in the area from the partition rib to its adjacent rib. In the area away from the partition ribs on the workpiece, it is little or even not affected by the deformation of the loading zone, so the forming characteristics of these areas...

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Abstract

The invention discloses a local loading forming-based optimization method for a preformed blank of a rib plate part. Isothermal local loading forming is realized by controlling material flow and macroscopic defects of a transitional region. The preformed blank subjected to optimization design can effectively improve the uniformity of the material flow, reduce transverse material flow of a cross rib in the transitional region, and improve the filling capability of a rib type cavity. In engineering application, the usage performance of members is improved, the production cost is reduced, and a foundation is laid for forming and integrated manufacturing of large complex members made of titanium alloy.

Description

technical field [0001] The invention relates to the thermal forging of hard-to-deform alloys in the field of thermal processing, in particular to a method for optimizing the shape of a preform in a transition zone under local loading under the condition of manufacturing a rib plate with a local loading forming method. Background technique [0002] Aerospace components increasingly require large-scale integration, thin-walled lightweight, and complex shapes. The use of high-performance lightweight alloy materials such as titanium alloys and thin-walled, integral, and ribbed lightweight structures is an effective way to improve the performance and reliability of parts and achieve lightweight equipment. Due to the high deformation resistance of titanium alloy, complex structure and large projected area, the overall forming of such components by traditional forging process not only has high requirements for equipment tonnage, but also is prone to problems such as difficulty in m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23G06F2113/22G06F2113/28
Inventor 樊晓光詹梅魏科
Owner NORTHWESTERN POLYTECHNICAL UNIV
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