Shock Loads
Subject
A shock load is a dynamically applied force that converts kinetic energy into deformation energy in the impacting mass and the impacted body at the time of impact.
If there is no deformation at all in both the impacting mass and the impacted body, the resultant force would be infinite irrespective of the magnitude of the impacting mass and its velocity at the moment of impact. The deformation generated in the mass together with the deformation in the body will define the force of the impact; i.e. the greater the deformation the lower the force and viceversa.
Calculator
Shock calculates the energy, deformation, stress, natural frequency, etc. due to a mass travelling at a specified velocity and impacting a beam or plate with various end and edge support conditions or an undefined body.
Shock also includes a general energy conversion calculation similar to that included in CalQlata’s Engineering Principles calculator, inasmuch as you enter all known values and Shock will calculate the unknown.
For help using this calculator see Technical Help
Shock Load Calculator  Options
Shock includes the following calculation options:
BEAMS – Point Load
‘Beams  Point Load’ defines the conditions for a concentrated mass impacting a beam at its weakest point. The end support conditions available for this calculation option are as follows: FixedFixed; GuidedFixed; SimpleFixed; FreeFixed; GuidedSimple and SimpleSimple.
You enter: 
and the shock load calculator will provide: 


Force

Deflection

Natural frequency

Natural period

Impact duration

Factor

Energy dissipated

Maximum beam stress

Distance to y (xʸ)

Distance to σ (xˢ)

BEAMS – Distributed Load
‘Beams  Distributed Load’ defines the conditions for an evenly distributed mass impacting a beam all along its length. The end support conditions available for this calculation option are as follows: FixedFixed; GuidedFixed; SimpleFixed; FreeFixed; GuidedSimple and SimpleSimple.
You enter: 
and the shock load calculator will provide: 


Force

Deflection

Natural frequency

Natural period

Impact duration

Factor

Energy dissipated

Maximum beam stress

Distance to y (xʸ)

Distance to σ (xˢ)

PLATES – Point Load
‘Plates  Point Load’ defines the conditions for a concentrated mass impacting a plate at its weakest point (the centre). The edge support conditions available for this calculation option are as follows: Fixed and Simple.
You enter: 
and the shock load calculator will provide: 


Force

Deflection

Natural frequency

Natural period

Impact duration

Factor

Energy dissipated

Maximum plate stress

PLATES – Distributed Load
‘Plates  Distributed Load’ defines the conditions for an evenly distributed mass impacting a plate all over its surface. The edge support conditions available for this calculation option are as follows: Fixed and Simple.
You enter: 
and the shock load calculator will provide: 


Force

Deflection

Natural frequency

Natural period

Impact duration

Factor

Energy dissipated

Maximum plate stress

NONELASTIC DEFORMATION
‘NonElastic Deformation’ provides the unknown value in a general kinetic to deformation energy conversion calculation.
You enter: 
and the shock load calculator will provide: 


Impact velocity

Mass (object)

Impact deflection (object)

Impact force (object)

Energy dissipated

Note: CalQlata’s Engineering Principles calculator includes stiffness (spring constant) of the impacted body in this type of calculation
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