Shock Load Calculator v1

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 vice-versa.

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: Fixed-Fixed; Guided-Fixed; Simple-Fixed; Free-Fixed; Guided-Simple and Simple-Simple.

You enter:	and the shock load calculator will provide:
Impact velocity Mass (object) Gravitational acceleration Mass (beam) Depth (beam) Length (beam) Young's modulus (beam) Second moment of area (beam)	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: Fixed-Fixed; Guided-Fixed; Simple-Fixed; Free-Fixed; Guided-Simple and Simple-Simple.

You enter:	and the shock load calculator will provide:
Impact velocity Mass per unit length (object) Gravitational acceleration Mass (beam) Depth (beam) Length (beam) Young's modulus (beam) Second moment of area (beam)	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:
Impact velocity Mass (object) Gravitational acceleration Density (plate) Thickness (plate) Diameter (plate) Young's modulus (plate) Poisson's ratio (plate)	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:
Impact velocity Mass per unit area (object) Gravitational acceleration Density (plate) Thickness (plate) Diameter (plate) Young's modulus (plate) Poisson's ratio (plate)	Force Deflection Natural frequency Natural period Impact duration Factor Energy dissipated Maximum plate stress

NON-ELASTIC DEFORMATION

‘Non-Elastic 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)	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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