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MapleSim Hydraulics Library from Modelon

Spring Accumulator  Spring loaded accumulator

 

Variables

Connections

Parameters

Variables

Name

Value

Units

Description

Modelica ID

pistonCylinder

 

 

 

pistonCylinder

housing

 

 

 

housing

friction

 

 

 

friction

fixed

 

 

 

fixed

chamber

 

 

 

chamber

spring

 

 

Gas or mechanical spring

spring

pAsummary

chamber.p

Pa

Pressure at port A

summary_pA

qchamsummary

chamber.qcham

m3s

Flow rate flowing into Chamber

summary_qCham

Phydsummary

chamber.summary_HP

W

Hydraulic Power in chamber

summary_HP

Connections

Name

Description

Modelica ID

portA

 

port_A

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

nports

0

 

Number of ports

nPorts

di

 

m

Inner diameter of cylinder

d_i

Vdead

10-6

m3

Minimum oil volume

dead_volume

m

110

kg

Mass of piston

m

smax

12

m

Piston maximum stroke (between stiff, compliant cylinder walls)

s_max

piston

0.02

m

Length of piston

piston_length

sstart

12smax

m

Cylinder initial stroke: default is half full

s_start

ppreload

4.·107

Pa

Preload pressure for empty accumulator

p_preload

ΔTsystem

0

K

Temperature offset from system temperature

dT_system

cspring

8.·105

Nm

Spring rate

c_spring

Friction Parameters

Name

Default

Units

Description

Modelica ID

dviscous

4.·103

Nsm

 

viscous_damping

Constant Parameters

Name

Default

Units

Description

Modelica ID

Apiston

[1]

m2

Piston area

piston_area

[1] 14di2π

See Also

Volumes

MapleSim Hydraulics Library from Modelon Overview

 


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