Header menu link for other important links
X
Characterization of bolt hole residual stresses for assessing structural behavior of truck frame rails
Rao C. Lakshmana
Published in
2012
Volume: 418-420
   
Pages: 1124 - 1131
Abstract
Chassis frame rails in a truck are load bearing structural members that integrate vehicle power train with superstructure to form a complete vehicle. Large numbers of bolt holes that are cut into these frame side members act as joineries and points of attachments for various sub systems of the truck. While bolt holes are unavoidable due to its primary functional importance, the near hole residual stresses remaining from hole cutting operations may play a significant role in deciding the life of frame rail sections as they lead to early initiation of fatigue cracks around bolt hole surface. In order to assess the extent of plastic deformation and resulting residual stress pattern in near hole areas of bolt holes, experimental investigation through microstructure analysis, micro-hardness and X-ray diffraction measurements has been taken up. The hole cutting operations considered for this exercise are drilling, punching, laser cutting and water jet cutting used to cut holes on truck frame rail sections. Apart from this, an assessment of shot-peened hole surface was also taken up to understand the effect of shot-peening on structural behavior of frame rail bolt hole sections. The experimentally measured near hole residual stress profiles can be considered as initial conditions for further numerical analysis to study the influence of bolt hole residual stresses on fatigue life of frame rail sections. © (2012) Trans Tech Publications, Switzerland.
About the journal
JournalAdvanced Materials Research
ISSN10226680
Open AccessNo
Concepts (28)
  •  related image
    BOLT HOLES
  •  related image
    Experimental investigations
  •  related image
    FATIGUE CRACKS
  •  related image
    HOLE CUTTING
  •  related image
    HOLE SURFACE
  •  related image
    Initial conditions
  •  related image
    Laser cutting
  •  related image
    Load bearing
  •  related image
    MICROSTRUCTURE ANALYSIS
  •  related image
    RAIL SECTIONS
  •  related image
    RESIDUAL STRESS PROFILES
  •  related image
    STRUCTURAL BEHAVIORS
  •  related image
    Sub-systems
  •  related image
    TRUCK FRAME
  •  related image
    TRUCK FRAMES
  •  related image
    WATERJET CUTTING
  •  related image
    X-RAY DIFFRACTION AND STRUCTURAL BEHAVIOR
  •  related image
    X-ray diffraction measurements
  •  related image
    AUTOMOBILE FRAMES
  •  related image
    Bolts
  •  related image
    Fatigue of materials
  •  related image
    Hardness
  •  related image
    JET DRILLING
  •  related image
    Microstructure
  •  related image
    Numerical analysis
  •  related image
    Residual stresses
  •  related image
    X ray diffraction
  •  related image
    Trucks