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# Re: [femm] non linear stainless steel meterial

- To: femm@yahoogroups.com
- Subject: Re: [femm] non linear stainless steel meterial
- From: "Israel Kehaty" <tsiporak@hotmail.com>
- Date: Fri, 14 Mar 2003 14:10:23 +0000
- Bcc:

That depends on the way you do the experiment. If for example you pull the plunger away from the solenoid then the measured force will be larger than the calculated force because you have to pull against the magnetic force and the friction force (from the side force because the plunger is never concentric to the solenoid). On the other hand if you use the solenoid to lift a weight from a distance you will need more current than the calculated force needed to produce the force to pull the weight, because again you need to overcome the friction force. Therefore, when you will calculate the force for the measured current you will find that it is higher than the weight.

>From: ±è¿ëÃ¶
>Reply-To: femm@yahoogroups.com
>To:
>Subject: Re: [femm] non linear stainless steel meterial
>Date: Fri, 14 Mar 2003 10:36:28 +0900
>
>Hi.
>If the force includes the friction of solenoid, then doesn't it expeirmal values < calculated values ?
>Because.. I think that "experimental values-friction force = calculated values". Isn't is?
>But my analysis values are smaller than measured values.
>
> ----- Original Message -----
> From: Israel Kehaty
> To: femm@yahoogroups.com
> Sent: Thursday, March 13, 2003 4:57 PM
> Subject: Re: [femm] non linear stainless steel meterial
>
>
>
>
>
>
> The 1 kgf difference between the measured and the calculated is reasonable. It can be due to the way you measure the force. I suspect that the force you are measuring includes the friction (due to the side force) between the plunger to the solenoid housing too. A schematic of your testing fixture can help understanding if this is the reason.
>
> >From: "Antonio F.R. Carabio"
> >Reply-To: femm@yahoogroups.com
> >To:
> >Subject: Re: [femm] non linear stainless steel meterial
> >Date: Wed, 12 Mar 2003 09:16:15 -0300
> >
> >At the attached link you may find some data to begin. Best regards
> >
> >Ing. Antonio F.R. CARABIO
> >ingacarabio@fibertel.com.ar
> >Jaramillo 1610. 6?B
> >(1429) BUENOS AIRES
> >4703-3242
> >----- Mensaje original -----
> >De: "kimyongchul75"
> >Para:
> >Enviado: martes, 11 de marzo de 2003 22:53
> >Asunto: [femm] non linear stainless steel meterial
> >
> >
> > > Hi everybody!
> > > I'm searching B-H data file of stainless steel in order to calculate
> > > force a solenoid. The force values using virtual work methods is
> > > below compare with experimental results(experimental result &
> > > catalogue values : 9kgf , but calculated values: 8kgf). Others method
> > > (Maxwell stress tensor method, Lorent force) results are same the
> > > virtual work method.
> > > I think, the choice of meterial of shaft(mover) in solenoid not
> > > proper. The meterial of mover is stailess steel. But, there is three
> > > kind of non-linear stainless steel in FEMM. 416,420,455 is not
> > > suitable for meterial of mover in my analsis model. I need B-H data
> > > file of other kinds of stainless steel(ex. 431...).
> > > Any would help me for the searching B-H data fiel of stainless steel?
> > > Thank.
> > >
> > >
> > >
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> > >
> > >
> ><< MagneticBehaviorofStainlessSteels.url >>
>
>
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