$\mathrm{a}$	Dimension between atoms bond
$\mathrm{l}$	Length of graphene bar
$\mathrm{d}$	Diameter of graphene bar
$\mathrm{h}$	Thickness of single graphene sheet for one layer
${\mathrm{L}}_{\mathrm{s}}$	Length of segment
${\mathrm{F}}_{\mathrm{x}}$	Tension force for armchair edge (x-direction)
${\mathrm{F}}_{\mathrm{y}}$	Tension force for zigzag edge (y-direction)
$\mathsf{\alpha }$	Angle between graphene bar
$\mathsf{\Delta }\mathrm{N}$	Increment of elongation of segment caused by tension
$\mathsf{\Delta }\mathrm{l}$	Increment of elongation of bar
${\mathrm{f}}_{\mathrm{c}}$	Total elongation caused by bending
$\mathrm{Y}$	Young’s modulus of segment of graphene sheet
${\mathrm{E}}_{\mathrm{Gr}}$	Young’s modulus of graphene bar
$\mathrm{J}$	Moment of inertia of graphene bar
$\mathrm{A}$	Cross-section area
$\mathsf{\Delta }{\mathrm{l}}_{\mathrm{t}}$	Total increment of elongation due to bending and tension
${\mathrm{L}}_{\mathrm{s}}$	Length of graphene segment
$\mathsf{\nu }$	Poisson’s ratio for graphene bar
${\mathsf{\nu }}_{\mathrm{Gr}}^{\left(1\right)}$	Poisson’s ratio for graphene cut-out for x-direction
${\mathsf{\nu }}_{\mathrm{Gr}}^{\left(2\right)}$	Poisson’s ratio for graphene cut-out for y-direction
${\mathsf{\epsilon }}_{\mathrm{x}}^{\left(1\right)}$	Strain of segment in x-direction caused by tension and bending in x-direction
${\mathsf{\epsilon }}_{\mathrm{y}}^{\left(1\right)}$	Strain of segment in y-direction caused by tension and bending in x-direction
${\mathsf{\epsilon }}_{\mathrm{x}}^{\left(2\right)}$	Strain in x-direction of alternative segment in x-direction
${\mathsf{\epsilon }}_{\mathrm{y}}^{\left(4\right)}$	Strain of segment in y-direction caused by tension and bending in y-direction
${\mathsf{\epsilon }}_{\mathrm{x}}^{\left(4\right)}$	Strain of segment in x-direction caused by tension and bending in y-direction
${\mathsf{\epsilon }}_{\mathrm{y}}^{\left(3\right)}$	Strain in y-direction of alternative segment in y-direction
νxy	Poisson’s ratio of graphene calculated for two perpendicular forces
kxy	Ratio of forces