Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Design method for statically indeterminate fixed beam frame with self-supporting structure

A self-supporting structure and design method technology, applied in the field of additive manufacturing, can solve the problems of reducing the surface quality of the prototype, increasing the printing time, and not easy to remove, achieving the effect of excellent and reasonable mechanical structure, reducing printing process, and short printing time

Inactive Publication Date: 2017-12-01
XIAN UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, when printing, some people will use software to automatically add support structures for the super-static fixed-end beams. The automatically added support structures start from the printing platform where they are located, and reach the bottom of the super-static fixed-end beam structure on the platform. The consumables are serious. Moreover, the printing time is greatly increased, and some people will use software to artificially add various shapes of supports: supports such as single-arm boards or double-wall boards; however, the support structures added by the above two methods need to be integrated with the product after printing. The body is separated, and the support with sufficient strength and stability is too firmly bonded to the prototype, which is not easy to remove and easily reduces the surface quality of the prototype

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Design method for statically indeterminate fixed beam frame with self-supporting structure
  • Design method for statically indeterminate fixed beam frame with self-supporting structure
  • Design method for statically indeterminate fixed beam frame with self-supporting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Set the same design parameters of support a1 and support b2: the length a of support a1 2 equal to the length a of the support b2 3 =20mm, width b of support a1 2 equal to the width b of the support b2 3 = 30mm, the height c of the support a1 2 equal to the height c of the support b2 3 = 100mm; According to the parameters of support a1 and support b2, the structure of support a1 and support b2 can be designed;

[0068] Set the parameters of fixed-end beam 3 as: a 1 =140mm,b 1 = 25mm, c 1 = 15mm, the external equivalent load f of the fixed end beam 3 = 300N, the fixed end beam 3 is designed between the support a1 and the support b2 according to the design parameters of the fixed end beam 3, since the material of the fixed end beam is polylactic acid material, The flexural modulus E of the polylactic acid material is 100MPa~150MPa, take the flexural modulus E=100MPA, and use the following formula to calculate the allowable thickness [r] from the top of the ellipse ...

Embodiment 2

[0075] Set the same design parameters of support a1 and support b2: the length a of support a1 2 equal to the length a of the support b2 3 =20mm, width b of support a1 2 equal to the width b of the support b2 3 = 30mm, the height c of the support a1 2 equal to the height c of the support b2 3 =80mm; According to the parameters of support a1 and support b2, the structure of support a1 and support b2 can be designed;

[0076] Set the parameters of fixed-end beam 3 as: a 1 =80mm,b 1 = 15mm, c 1 = 10mm, the external equivalent load f of the fixed end beam 3 = 120N, the fixed end beam 3 is designed between the support a1 and the support b2 according to the design parameters of the fixed end beam 3, since the material of the fixed end beam is polylactic acid material, The flexural modulus E of the polylactic acid material is 100MPa~150MPa, take the flexural modulus E=100MPA, and use the following formula to calculate the allowable thickness [r] from the top of the ellipse arc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
flexural modulusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a design method for a statically indeterminate fixed beam frame with a self-supporting structure. The design method specifically comprises the following steps: step 1, setting design parameters of a support a and a support b; step 2, designing the structure of the support a and the structure of the support b according to the parameters set in the step 1, and arranging the support a and the support b in parallel; step 3, setting the design parameter of a fixed beam; step 4, designing the structure of the fixed beam between the support a and the support b according to the parameters set in the step 3; and step 5, designing an upwards recessed elliptical arc arch bridge structure on the lower surface of the fixed beam according to the parameters set in the step 1 and the step 3 to obtain the statically indeterminate fixed beam frame with the self-supporting structure. The self-supporting structure designed by the method does not require to be removed after printing is finished, therefore, raw materials are saved, and the printing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a design method of a super-static fixed-end beam frame with a self-supporting structure. Background technique [0002] The fusion lamination molding technology is to heat and melt the filamentous hot-melt material, and at the same time, under the control of the computer, the three-dimensional nozzle selectively coats the material on the workbench according to the cross-sectional profile information, and forms a layer of cross-section after rapid cooling. . After one layer of molding is completed, the machine table is lowered to a height (that is, the thickness of the layer) and then the next layer is formed until the entire solid shape is formed. This processing method makes when the upper section is larger than the lower section, the extra part of the upper section will be suspended (or suspended) due to no material support, so that the extra section will collapse ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/106G06F17/50B33Y10/00
CPCB33Y10/00G06F30/17
Inventor 刘琳琳李凯凯李蒙马杰易天格万初亮武吉梅
Owner XIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com