REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

Stress CALCULATION OF NOSE GEAR SUPPORT WITH ASPECT OF WELDING of AEROSPACE STEEL 15CrMoV6

ALEKSANDAR PETROVIĆ

Utva avio industrija d.o.o. pealeks@gmail.com

BOGDAN S. BOGDANOVIĆ

Utva avio industrija D.O.O. bogdanovic00@gmail.com

ALEKSANDAR STANAĆEV

Utva avio industrija D.O.O. aleksandarstanacev@outlook.com

Abstract: Nose gear support stress calculation of airplane “SOVA” and welding specification definition of welded connections are considered in this paper. During design of new plane “SOVA” aroused need for modification of “Utva-75” nose gear support. Lack of information regarding welding 15CrMoV6 steel made us create welding procedure specification and to check them experimentally.

Calculation of stress is realized with FEM analysis. Results are used for welded connections calculation and for creating proper welding procedure specification.

Welding analysis is done experimentally and numerically. Experiment is done on standard specimens.  Specimens are made from aerospace steel 15CrMoV6 (1.7734). Result are compared, and shown in paper.

Keywords: Nose gear support, Welding, TIG, 15CrMoV6, FEM.