Maintaining a subtle balance between conservative and precise solutions in the aerospace static concession processes
Journal Title: Proceedings in Manufacturing Systems - Year 2019, Vol 14, Issue 1
Abstract
The Static Stress represents a main task of the aerospace concessions workflow that is used to address the impact of manufacturing non-conformities on local and global criteria. The process benefits from conservatism, being most of the times a fast way to prove that a non-conformal part can withstand damage. Even so, critically loaded components are already subject to conservative assumptions that are applied in the certification stage. As a consequence, the results achieved are unrealistic, lowering the amount of conservatism demanding for extra time and economic resources. To cope with these aspects, an approach is proposed involving the use of parametric finite element method models for studying the variation of mechanical stresses due to possible non-conformity thresholds. Knock Down Factor charts are developed based on the effect of load redistribution. The approach can successfully be re-used for similar types of non-conformities. The given concepts are proved by means of practical examples throughout the work.
Authors and Affiliations
Tudor George ALEXANDRU, Mircea Gabriel BURTOIU, Robert RUSU
Keywords
Related Articles
- EP ID EP586897
- DOI -
- Views 116
- Downloads 0
Validation of forward geometric models for ABB robots using virtual models and the software applications CATIA and ABB Robot Studio
This paper presents the working steps for the validation of the forward geometric models of ABB industrial robots (IR) using their virtual models (CAD models) along with CATIA and ABB RobotStudio software applications. A...
The interference at the assemblage of cylindrical worm-star wheel gear
The cylindrical worm – star wheel gear can be met in practice, for example, in transmissions with kinematical purpose, or in the construction of single screw compressors. Despite having a limited applicability, it...
Gait analysis in cerebral palsy using VICON system
Gait is a cyclical event, and Perry described it for the first time. The gait has two phases: stance (60%) and swing (40%), each divided, so stance phase includes pre swing, terminal stance, mid stance, loading response...
The relevance of fixed costs in the diagnosis of operating risk to SME’S
Due to their weak capitalization and low negotiation power on the market, small and medium-size enterprises (SME) have a high vulnerability to changes in the environment they operate. These vulnerabilities can significan...
Robotic palletizing cell for optimum 5 l water bottles palletizing
The paper presents the conceptual design, virtual prototype achievement and the real physically system implementation of a robotic palletizing cell. The system includes an own (original) designed robotic gripper and sort...